公开(公告)号：US09212412B2

公开(公告)日：2015-12-15

申请号：US12736255

申请日：2009-03-26

申请人： Yuusuke Oikawa ,  Hiroshi Urashima ,  Shinji Tsuge ,  Hiroshige Inoue ,  Ryo Matsuhashi

发明人： Yuusuke Oikawa ,  Hiroshi Urashima ,  Shinji Tsuge ,  Hiroshige Inoue ,  Ryo Matsuhashi

IPC分类号： C22C38/42 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/46 ,  C22C38/58

CPC分类号： C22C38/42 ,  C21D1/20 ,  C21D8/0205 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/38 ,  C22C38/40 ,  C22C38/46 ,  C22C38/58

摘要： The present invention provides a lean duplex stainless steel able to suppress the drop in corrosion resistance and toughness of a weld heat affected zone comprising, by mass %, C: 0.06% or less, Si: 0.1 to 1.5%, Mn: 2.0 to 4.0%, P: 0.05% or less, S: 0.005% or less, Cr: 19.0 to 23.0%, Ni: 1.0 to 4.0%, Mo: 1.0% or less, Cu: 0.1 to 3.0%, V: 0.05 to 0.5%, Al: 0.003 to 0.050%, O: 0.007% or less, N: 0.10 to 0.25%, and Ti: 0.05% or less, having a balance of Fe and unavoidable impurities. An Md30 value is 80 or less, an Ni-bal is −7.1 to 4, an austenite phase area percentage is 40 to 70%, and a 2×Ni+Cu is 3.5 or more: Md30=551−462×(C+N)−9.2×Si−8.1×Mn−29×(Ni+Cu)−13.7×Cr−18.5×Mo−68×Nb; Ni-bal=(Ni+0.5Mn+0.5Cu+30C+30N)−1.1(Cr+1.5Si+Mo+W)+8.2 and N(%)≦0.37+0.03×(Ni-bal).

摘要翻译： 本发明提供一种能够抑制焊接热影响区域的耐腐蚀性和韧性下降的稀薄双相不锈钢，以质量％计含有C：0.06％以下，Si：0.1〜1.5％，Mn：2.0〜4.0 ％，P：0.05％以下，S：0.005％以下，Cr：19.0〜23.0％，Ni：1.0〜4.0％，Mo：1.0％以下，Cu：0.1〜3.0％，V：0.05〜0.5％ ，Al：0.003〜0.050％，O：0.007％以下，N：0.10〜0.25％，Ti：0.05％以下，余量由Fe和不可避免的杂质构成。 Md30值为80以下，Ni-bal为-7.1〜4，奥氏体相面积率为40〜70％，2×Ni + Cu为3.5以上：Md30 = 551-462×（C + N）-9.2×Si-8.1×Mn-29×（Ni + Cu）-13.7×Cr-18.5×Mo-68×Nb; Ni-bal =（Ni + 0.5Mn + 0.5Cu + 30C + 30N）-1.1（Cr + 1.5Si + Mo + W）+8.2和N（％）＆nlE; 0.37 + 0.03×（Ni-bal）。

公开(公告)号：US20110097234A1

公开(公告)日：2011-04-28

申请号：US12736255

申请日：2009-03-26

申请人： Yuusuke Oikawa ,  Hiroshi Urashima ,  Shinji Tsuge ,  Hiroshige Inoue ,  Ryo Matsuhashi

发明人： Yuusuke Oikawa ,  Hiroshi Urashima ,  Shinji Tsuge ,  Hiroshige Inoue ,  Ryo Matsuhashi

IPC分类号： C22C38/52 ,  C22C38/00 ,  C22C38/18 ,  C22C38/22

CPC分类号： C22C38/42 ,  C21D1/20 ,  C21D8/0205 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/38 ,  C22C38/40 ,  C22C38/46 ,  C22C38/58

摘要： The present invention provides a lean duplex stainless steel able to suppress the drop in corrosion resistance and toughness of a weld heat affected zone and is characterized by containing, by mass %, C: 0.06% or less, Si: 0.1 to 1.5%, Mn: 2.0 to 4.0%, P: 0.05% or less, S: 0.005% or less, Cr: 19.0 to 23.0%, Ni: 1.0 to 4.0%, Mo: 1.0% or less, Cu: 0.1 to 3.0%, V: 0.05 to 0.5%, Al: 0.003 to 0.050%, 0: 0.007% or less, N: 0.10 to 0.25%, and Ti: 0.05% or less, having a balance of Fe and unavoidable impurities, having an Md30 value expressed by formula (1) of 80 or less, having an Ni-bal expressed by formula (2) of −8 to −4, having a relationship between the Ni-bal and the N content satisfying formula (3), having an austenite phase area percentage of 40 to 70%, and having a 2×Ni+Cu of 3.5 or more: Md30=551−462×(C+N)−9.2×Si−8.1×Mn−29×(Ni+Cu)−13.7×Cr−18.5×Mo−68×Nb   (1) Ni-bal=(Ni+0.5Mn+0.5Cu+30C+30N)−1.1(Cr+1.5Si+Mo+W)+8.2   (2) N(%)≦0.37+0.03×(Ni-bal)   (3)

摘要翻译： 本发明提供能够抑制焊接热影响区的耐腐蚀性和韧性降低的双相不锈钢，其特征在于，以质量％计含有C：0.06％以下，Si：0.1〜1.5％，Mn ：2.0〜4.0％，P：0.05％以下，S：0.005％以下，Cr：19.0〜23.0％，Ni：1.0〜4.0％，Mo：1.0％以下，Cu：0.1〜3.0％ 0.05〜0.5％，Al：0.003〜0.050％，0：0.007％以下，N：0.10〜0.25％，Ti：0.05％以下，余量为Fe和不可避免的杂质，Md30值为式 （1）为80以下，具有由式（2）表示的Ni-bal为-8〜-4，具有Ni-bal与满足式（3）的N含量之间的关系，具有奥氏体相面积百分比 40〜70％，2×Ni + Cu为3.5以上：Md30 = 551-462×（C + N）-9.2×Si-8.1×Mn-29×（Ni + Cu）-13.7×Cr -18.5×Mo-68×Nb（1）Ni-bal =（Ni + 0.5Mn + 0.5Cu + 30C + 30N）-1.1（Cr + 1.5Si + Mo + W）+8.2（2）N（％）＆ ; 0.37 + 0.03×（Ni-bal） （3）

公开(公告)号：US20060243719A1

公开(公告)日：2006-11-02

申请号：US11404413

申请日：2006-04-13

申请人： Hiroshige Inoue ,  Ryuichi Honma ,  Manabu Mizumoto ,  Yuusuke Oikawa ,  Ryo Matsuhashi ,  Shinji Tsuge ,  Shigeo Fukumoto

发明人： Hiroshige Inoue ,  Ryuichi Honma ,  Manabu Mizumoto ,  Yuusuke Oikawa ,  Ryo Matsuhashi ,  Shinji Tsuge ,  Shigeo Fukumoto

IPC分类号： B23K35/22

CPC分类号： B23K35/26

摘要： A welding wire for austenitic stainless steel welding contains, in percent by mass, C: 0.005 through 0.05%, Si: 0.1 through 1.0%, Mn: 1.0 through 3.5%, Cr: 25.0 through 28.0%, Ni: 16.0 through 23.9%, Mo: 1.6 through 3.0%, Cu: 0.1 through 0.5%, Al: 0.001 through 0.02%, and N: more than 0.30 through 0.50%, limiting 0 to 0.03% or less, P to 0.03% or less, and S to 0.005% or less, and having a ratio of a Cr equivalent to Ni equivalent (Cr equivalent/Ni equivalent) within a range between 0.85 and 1.2 and a PI value of 35 or more, the remainder being iron and unavoidable impurities.

摘要翻译： 奥氏体不锈钢焊接用焊丝以质量％计含有C：0.005〜0.05％，Si：0.1〜1.0％，Mn：1.0〜3.5％，Cr：25.0〜28.0％，Ni：16.0〜23.9％ Mo：1.6〜3.0％，Cu：0.1〜0.5％，Al：0.001〜0.02％，N：大于0.30〜0.50％，0〜0.03％以下，P：0.03％以下，S：0.005以下 ％以下，Cr相当于Ni当量（Cr当量/ Ni当量）在0.85〜1.2的范围内，PI值为35以上，剩余部分为铁和不可避免的杂质。

公开(公告)号：US08105447B2

公开(公告)日：2012-01-31

申请号：US12391045

申请日：2009-02-23

申请人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

发明人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

IPC分类号： C22C38/44 ,  C22C30/00 ,  C22C38/42 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

CPC分类号： C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

摘要： An austenitic stainless steel hot-rolled steel material can be provided which has sea-water resistance and strength superior to conventional steel. Low-temperature toughness can be maintained, which is preferable in a structural member of speedy craft. The steel material can include an austenitic stainless steel hot-rolled steel material which excels in the properties of corrosion resistance, proof stress, and low-temperature toughness. In such austenitic stainless steel hot-rolling steel material, e.g., PI [=Cr+3.3(Mo+0.5W)+16N] ranges from 35 to 40, δ cal [=2.9(Cr+0.3Si+Mo+0.5W)−2.6(Ni+0.3Mn+0.25Cu+35C+20N)−18] ranges from −6 to +2, and a 0.2% proof stress at room temperature is not less than 550 MPa, Charpy impact value measured using a V-notch test piece at −40° C. is not less than 100 J/cm2, and the pitting potential measured in a deaerated aqueous solution of 10% NaCl at 50° C. (Vc′100) is not less than 500 mV (as it relates to saturated Ag/AgCl).

摘要翻译： 可以提供具有优于常规钢的耐海水性和强度的奥氏体不锈钢热轧钢材。 可以保持低温韧性，这在快速工艺的结构构件中是优选的。 钢材可以包括耐腐蚀性，耐应力性和低温韧性优异的奥氏体不锈钢热轧钢材。 在这种奥氏体不锈钢热轧钢材中，例如PI [= Cr + 3.3（Mo + 0.5W）+ 16N]为35〜40，δcal[= 2.9（Cr + 0.3Si + Mo + 0.5W） -2.6（Ni + 0.3Mn + 0.25Cu + 35C + 20N）-18]的范围为-6至+2，室温下的0.2％屈服应力不低于550MPa，夏比冲击值使用V- 在-40℃下的切口试验片不小于100J / cm 2，在50℃的10％NaCl的脱气水溶液（Vc'100）中测定的点蚀电位不小于500mV 它涉及饱和Ag / AgCl）。

公开(公告)号：US20100230011A1

公开(公告)日：2010-09-16

申请号：US12391045

申请日：2009-02-23

申请人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

发明人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

IPC分类号： C22C38/44 ,  C22C38/42 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C30/02

CPC分类号： C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

摘要： An austenitic stainless steel hot-rolled steel material can be provided which has sea-water resistance and strength superior to conventional steel. Low-temperature toughness can be maintained, which is preferable in a structural member of speedy craft. The steel material can include an austenitic stainless steel hot-rolled steel material which excels in the properties of corrosion resistance, proof stress, and low-temperature toughness. In such austenitic stainless steel hot-rolling steel material, e.g., PI [=Cr+3.3(Mo+0.5W)+16N] ranges from 35 to 40, δ cal [=2.9(Cr+0.3Si+Mo+0.5W)−2.6(Ni+0.3Mn+0.25Cu+35C+20N)−18] ranges from −6 to +2, and a 0.2% proof stress at room temperature is not less than 550 MPa, Charpy impact value measured using a V-notch test piece at −40° C. is not less than 100 J/cm2, and the pitting potential measured in a deaerated aqueous solution of 10% NaCl at 50° C. (Vc'100) is not less than 500 mV (as it relates to saturated Ag/AgCl).

摘要翻译： 可以提供具有优于常规钢的耐海水性和强度的奥氏体不锈钢热轧钢材。 可以保持低温韧性，这在快速工艺的结构构件中是优选的。 钢材可以包括耐腐蚀性，耐应力性和低温韧性优异的奥氏体不锈钢热轧钢材。 在这种奥氏体不锈钢热轧钢材中，例如PI [= Cr + 3.3（Mo + 0.5W）+ 16N]为35〜40，δcal[= 2.9（Cr + 0.3Si + Mo + 0.5W） -2.6（Ni + 0.3Mn + 0.25Cu + 35C + 20N）-18]的范围为-6至+2，室温下的0.2％屈服应力不低于550MPa，夏比冲击值使用V- 在-40℃下的切口试验片不小于100J / cm 2，在50℃的10％NaCl的脱气水溶液（Vc'100）中测定的点蚀电位不小于500mV 它涉及饱和Ag / AgCl）。

公开(公告)号：US08710405B2

公开(公告)日：2014-04-29

申请号：US11404413

申请日：2006-04-13

申请人： Hiroshige Inoue ,  Ryuichi Honma ,  Manabu Mizumoto ,  Yuusuke Oikawa ,  Ryo Matsuhashi ,  Shinji Tsuge ,  Shigeo Fukumoto

发明人： Hiroshige Inoue ,  Ryuichi Honma ,  Manabu Mizumoto ,  Yuusuke Oikawa ,  Ryo Matsuhashi ,  Shinji Tsuge ,  Shigeo Fukumoto

IPC分类号： B23K35/34 ,  B23K35/22

CPC分类号： B23K35/26

摘要： A welding wire for austenitic stainless steel welding contains, in percent by mass, C: 0.005 through 0.05%, Si: 0.1 through 1.0%, Mn: 1.0 through 3.5%, Cr: 25.0 through 28.0%, Ni: 16.0 through 23.9%, Mo: 1.6 through 3.0%, Cu: 0.1 through 0.5%, Al: 0.001 through 0.02%, and N: more than 0.30 through 0.50%, limiting O to 0.03% or less, P to 0.03% or less, and S to 0.005% or less, and having a ratio of a Cr equivalent to Ni equivalent (Cr equivalent/Ni equivalent) within a range between 0.85 and 1.2 and a PI value of 35 or more, the remainder being iron and unavoidable impurities.

摘要翻译： 奥氏体不锈钢焊接用焊丝以质量％计含有C：0.005〜0.05％，Si：0.1〜1.0％，Mn：1.0〜3.5％，Cr：25.0〜28.0％，Ni：16.0〜23.9％ Mo：1.6〜3.0％，Cu：0.1〜0.5％，Al：0.001〜0.02％，N：大于0.30〜0.50％，将O限制在0.03％以下，P：0.03％以下，S：0.005以下 ％以下，Cr相当于Ni当量（Cr当量/ Ni当量）在0.85〜1.2的范围内，PI值为35以上，剩余部分为铁和不可避免的杂质。

公开(公告)号：US20120111457A1

公开(公告)日：2012-05-10

申请号：US13349866

申请日：2012-01-13

申请人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

发明人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

IPC分类号： C21D11/00 ,  C22C38/58 ,  C22C38/44

CPC分类号： C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

摘要： An austenitic stainless steel hot-rolled steel material can be provided which has seawater resistance and strength superior to conventional steel. Low-temperature toughness can be maintained, which is preferable in a structural member of speedy craft. The steel material can include an austenitic stainless steel hot-rolled steel material which excels in the properties of corrosion resistance, proof stress, and low-temperature toughness. In such austenitic stainless steel hot-rolling steel material, e.g., PI [=Cr+3.3(Mo+0.5W)+16N] ranges from 35 to 40, δ cal [=2.9 (Cr+0.3Si +Mo+0.5W)−2.6 (Ni+0.3Mn+0.25Cu+35C+20N)−18] ranges from −6 to +2, and a 0.2% proof stress at room temperature is not less than 550 MPa, Charpy impact value measured using a V-notch test piece at −40° C. is not less than 100 J/cm2, and the pitting potential measured in a deaerated aqueous solution of 10% NaCl at 50° C. (Vc'100) is not less than 500 mV (as it relates to saturated Ag/AgCl).

摘要翻译： 可以提供具有优于常规钢的耐海水性和强度的奥氏体不锈钢热轧钢材。 可以保持低温韧性，这在快速工艺的结构构件中是优选的。 钢材可以包括耐腐蚀性，耐应力性和低温韧性优异的奥氏体不锈钢热轧钢材。 在这种奥氏体不锈钢热轧钢材中，例如PI [= Cr + 3.3（Mo + 0.5W）+ 16N]为35〜40，δcal[= 2.9（Cr + 0.3Si + Mo + 0.5W） -2.6（Ni + 0.3Mn + 0.25Cu + 35C + 20N）-18]的范围为-6至+2，室温下的0.2％屈服应力不低于550MPa，夏比冲击值使用V- 在-40℃下的切口试验片不小于100J / cm 2，在50℃的10％NaCl的脱气水溶液（Vc'100）中测定的点蚀电位不小于500mV 它涉及饱和Ag / AgCl）。

公开(公告)号：US20060243356A1

公开(公告)日：2006-11-02

申请号：US11343516

申请日：2006-01-30

申请人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

发明人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

IPC分类号： C22C38/44 ,  C21D8/00

CPC分类号： C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

摘要： An austenitic stainless steel hot-rolled steel material can be provided which has sea-water resistance and strength superior to conventional steel. Low-temperature toughness can be maintained, which is preferable in a structural member of speedy craft. The steel material can include an austenitic stainless steel hot-rolled steel material which excels in the properties of corrosion resistance, proof stress, and low-temperature toughness. In such austenitic stainless steel hot-rolling steel material, e.g., PI[=Cr+3.3(Mo+0.5W)+16N] ranges from 35 to 40, δ cal [=2.9 (Cr+0.3Si+Mo+0.5W)−2.6 (Ni+0.3Mn+0.25Cu+35C+20N)−18] ranges from −6 to +2, and a 0.2% proof stress at room temperature is not less than 550 MPa, Charpy impact value measured using a V-notch test piece at −40° C. is not less than 100 J/cm2, and the pitting potential measured in a deaerated aqueous solution of 10% NaCl at 50° C. (Vc′100) is not less than 500 mV (as it relates to saturated Ag/AgCl).

摘要翻译： 可以提供具有优于常规钢的耐海水性和强度的奥氏体不锈钢热轧钢材。 可以保持低温韧性，这在快速工艺的结构构件中是优选的。 钢材可以包括耐腐蚀性，耐应力性和低温韧性优异的奥氏体不锈钢热轧钢材。 在这种奥氏体不锈钢热轧钢材中，例如PI [= Cr + 3.3（Mo + 0.5W）+ 16N]的范围为35至40，δcal[= 2.9（Cr + 0.3Si + Mo + 0.5W） -2.6（Ni + 0.3Mn + 0.25Cu + 35C + 20N）-18]的范围为-6至+2，室温下的0.2％屈服应力不低于550MPa，夏比冲击值使用V- 在-40℃下的切口试验片不小于100J / cm 2，在50℃的10％NaCl的脱气水溶液（Vc'100）中测定的点蚀电位不小于500mV 它涉及饱和Ag / AgCl）。

公开(公告)号：US08506729B2

公开(公告)日：2013-08-13

申请号：US13349866

申请日：2012-01-13

申请人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

发明人： Yuusuke Oikawa ,  Shinji Tsuge ,  Shigeo Fukumoto ,  Kazuhiro Suetsugu ,  Ryo Matsuhashi ,  Hiroshige Inoue

IPC分类号： C22C38/44 ,  C22C30/00 ,  C22C38/42 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

CPC分类号： C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

摘要： An austenitic stainless steel hot-rolled steel material can be provided which has sea-water resistance and strength superior to conventional steel. Low-temperature toughness can be maintained, which is preferable in a structural member of speedy craft. The steel material can include an austenitic stainless steel hot-rolled steel material which excels in the properties of corrosion resistance, proof stress, and low-temperature toughness. In such austenitic stainless steel hot-rolling steel material, e.g., PI [=Cr+3.3(Mo+0.5W)+16N] ranges from 35 to 40, δ cal [=2.9 (Cr+0.3Si+Mo+0.5W)−2.6 (Ni+0.3Mn+0.25Cu+35C+20N)−18] ranges from −6 to +2, and a 0.2% proof stress at room temperature is not less than 550 MPa, Charpy impact value measured using a V-notch test piece at −40° C. is not less than 100 J/cm2, and the pitting potential measured in a deaerated aqueous solution of 10% NaCl at 50° C. (Vc′100) is not less than 500 mV (as it relates to saturated Ag/AgCl).

摘要翻译： 可以提供具有优于常规钢的耐海水性和强度的奥氏体不锈钢热轧钢材。 可以保持低温韧性，这在快速工艺的结构构件中是优选的。 钢材可以包括耐腐蚀性，耐应力性和低温韧性优异的奥氏体不锈钢热轧钢材。 在这种奥氏体不锈钢热轧钢材中，例如PI [= Cr + 3.3（Mo + 0.5W）+ 16N]的范围为35至40，δcal[= 2.9（Cr + 0.3Si + Mo + 0.5W） -2.6（Ni + 0.3Mn + 0.25Cu + 35C + 20N）-18]的范围为-6至+2，室温下的0.2％屈服应力不低于550MPa，夏比冲击值使用V- 在-40℃下的切口试验片不小于100J / cm 2，在50℃的10％NaCl的脱气水溶液（Vc'100）中测定的点蚀电位不小于500mV 它涉及饱和Ag / AgCl）。

公开(公告)号：US09365914B2

公开(公告)日：2016-06-14

申请号：US14004039

申请日：2012-03-09

申请人： Yusuke Oikawa ,  Shinji Tsuge ,  Hiroshige Inoue ,  Ryo Matsuhashi

发明人： Yusuke Oikawa ,  Shinji Tsuge ,  Hiroshige Inoue ,  Ryo Matsuhashi

IPC分类号： C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/58 ,  C22C38/00 ,  C21D6/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C21D8/02 ,  B23K35/30 ,  B23K35/02

CPC分类号： C22C38/005 ,  B23K35/0261 ,  B23K35/3053 ,  B23K35/308 ,  C21D6/004 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/008 ,  C22C38/02 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/58

摘要： A nitrogen-rich two-phase stainless steel that has corrosion resistance equal to that of standard type of two-phase stainless steel and is not susceptible to corrosion in a welding heat-affected part, wherein the austenite phase area ratio is 40-70%, the PI value expressed by formula (1) is 30-38, the NI value expressed by formula (2) is 100-140, and the γpre expressed by formula (3) is 1350-1450. (1) PI=Cr+3.3Mo+16N (2) NI=(Cr+Mo)/N.

摘要翻译： 具有与标准型两相不锈钢相同的耐腐蚀性并且在焊接热影响部分不易腐蚀的富氮两相不锈钢，其中奥氏体相面积比为40-70％ ，式（1）表示的PI值为30-38，式（2）表示的NI值为100〜140，式（3）表示的γpre为1350〜1450。 （1）PI = Cr + 3.3Mo + 16N（2）NI =（Cr + Mo）/ N。