AUSTENITIC HEAT-RESISTANT ALLOY AND WELDED STRUCTURE
    2.
    发明公开
    AUSTENITIC HEAT-RESISTANT ALLOY AND WELDED STRUCTURE 审中-公开
    奥氏体耐热合金和焊接结构

    公开(公告)号:EP3318650A1

    公开(公告)日:2018-05-09

    申请号:EP16817632.9

    申请日:2016-06-02

    IPC分类号: C22C38/00 C22C38/58

    摘要: An austenitic heat-resistant alloy is provided that provides good crack resistance and high-temperature strength in a stable manner. The austenitic heat-resistant alloy has a chemical composition of, in mass %: 0.04 to 0.14 % C; 0.05 to 1 % Si; 0.5 to 2.5 % Mn; up to 0.03 % P; less than 0.001 % S; 23 to 32 % Ni; 20 to 25 % Cr; 1 to 5 % W; 0.1 to 0.6 % Nb; 0.1 to 0.6 % V; 0.1 to 0.3 % N; 0.0005 to 0.01 % B; 0.001 to 0.02 % Sn; up to 0.03 % Al; up to 0.02 % O; 0 to 0.5 % Ti; 0 to 2 % Co; 0 to 4 % Cu; 0 to 4 % Mo; 0 to 0.02 % Ca; 0 to 0.02 % Mg; 0 to 0.2 % REM; and the balance being Fe and impurities, the alloy having a microstructure with a grain size represented by a grain size number in accordance with ASTM E112 of 2.0 or more and less than 7.0.

    摘要翻译: 提供一种稳定地提供良好的抗裂性和高温强度的奥氏体耐热合金。 奥氏体系耐热合金的化学组​​成以质量%计为:C:0.04〜0.14% 0.05至1%的Si; 0.5至2.5%的Mn; 高达0.03%的P; 小于0.001%S; 23至32%的镍; 20至25%的Cr; 1至5%W; 0.1-0.6%的Nb; 0.1至0.6%V; 0.1至0.3%N; 0.0005至0.01%B; 0.001至0.02%的Sn; 高达0.03%的Al; 高达0.02%O; 0至0.5%的Ti; 0至2%Co; 0至4%的Cu; 0至4%Mo; Ca:0〜0.02% 0至0.02%的Mg; 0至0.2%REM; 余量由Fe和杂质构成,所述合金具有根据ASTM E112,由粒径号表示的粒径的2.0以上且小于7.0的组织。

    Ni-BASED HEAT-RESISTANT ALLOY
    3.
    发明公开
    Ni-BASED HEAT-RESISTANT ALLOY 有权
    HITZEBESTÄNDIGELEGIERUNG AUF NICKELBASIS

    公开(公告)号:EP2743362A1

    公开(公告)日:2014-06-18

    申请号:EP12822136.3

    申请日:2012-07-31

    IPC分类号: C22C19/05

    摘要: There is provided an Ni-based heat resistant alloy consisting of C≤0.15%, Si≤2%, Mn≤3%, P≤0.03%, S≤0.01%, Cr: 15% or more and less than 28%, Mo: 3 to 15%, Co: more than 5% and not more than 25%, Al: 0.2 to 2%, Ti: 0.2% to 3%, Nd: fn to 0.08%, and O≤0.4nod, further containing, as necessary, at least one kind of Nb, W, B, Zr, Hf, Mg, Ca, Y, La, Ce, Ta, Re and Fe of specific amounts, the balance being Ni and impurities, wherein, fn = 1.7 × 10 -5 d + 0.05{(A1/26.98) + (Ti/47.88) + (Nb/92.91)}. In the above formula, d denotes an average grain size (µm), and each symbol of an element denotes the content (mass%) of that element. If the alloy contains W, Mo + (W/2) ≤ 15% holds. In this alloy, the dramatic improvement in ductility after long-term use at high temperatures can be achieved, and the SR cracks that pose a problem in repair welding and the like can be avoided. Therefore, this alloy can be used suitably as a pipe material, a thick plate for parts having heat resistance and pressure resistance, a rod material, a forging, and the like in power generating boilers, chemical industry plants, and the like.

    摘要翻译: 提供了一种Ni基耐热合金,由C‰‰0.15%,Si‰¤2%,Mn‰³3%,P‰‰0.03%,S‰‰0.01%,Cr:15%以上 超过28%,Mo:3〜15%,Co:5%以上25%以下,Al:0.2〜2%,Ti:0.2%〜3%,Nd:fn〜0.08%,O‰ 0.4nod,进一步含有特定量的Nb,W,B,Zr,Hf,Mg,Ca,Y,La,Ce,Ta,Re和Fe中的至少一种,余量为Ni和杂质, 其中fn = 1.7×10 -5 d + 0.05 {(A1 / 26.98)+(Ti / 47.88)+(Nb / 92.91)}。 在上式中,d表示平均粒径(μm),元素的各符号表示该元素的含量(质量%)。 如果合金含有W,Mo +(W / 2)‰¤15%成立。 在该合金中,可以实现长期在高温下使用后的延展性的显着改善,并且可以避免在修补焊接等中引起问题的SR裂纹。 因此,这种合金可适用于发电锅炉,化工厂等的管材,具有耐热性和耐压性的部件的厚板,棒材,锻造等。

    HIGH-Cr AUSTENITIC STAINLESS STEEL
    5.
    发明公开
    HIGH-Cr AUSTENITIC STAINLESS STEEL 审中-公开
    高铬奥氏体不锈钢

    公开(公告)号:EP3309274A1

    公开(公告)日:2018-04-18

    申请号:EP16811480.9

    申请日:2016-06-03

    IPC分类号: C22C38/00 C22C38/60

    摘要: A high Cr austenitic stainless steel with a chemical composition consisting of in terms of % by mass, 0.03 to 0.12% of C, 0.10 to 1.00% of Si, 0.10 to 3.00% of Mn, 0.030% or less of P, 0.020% or less of S, 21.50 to 28.00% of Cr, more than 26.00 and not more than 35.00% of Ni, more than 2.00 and not more than 5.00% of W, 0.80% or less of Co, 0.01 to 0.70% of V, 0.15 to 1.00% of Nb, 0.001 to 0.040% of Al, 0.0001 to 0.0100% of B, 0.010 to 0.400% of W, 0.001 to 0.200% of Zr, 0.001 to 0.200% of Nd, 0.001 to 0.200% of Ta, 0.020 to 0.200% of Ta+0.8Nd+0.5Zr, 0.025% or less of Ti+Sn+Sb+Pb+As+Bi, 0.0090% or less of O, and a remainder consisting of Fe and impurities.

    摘要翻译: 本发明的高Cr奥氏体系不锈钢具有以质量%计含有C:0.03〜0.12%,Si:0.10〜1.00%,Mn:0.10〜3.00%,P:0.030%以下,0.020%或 ,S含量少,Cr含量21.50〜28.00%,Ni含量26.00以上35.00%以下,W含量2.00以上5.00%以下,Co含量0.80%以下,V含量0.01〜0.70%,0.15 ,Al:0.001〜0.040%,B:0.0001〜0.0100%,W:0.010〜0.400%,Zr:0.001〜0.200%,Nd:0.001〜0.200%,Ta:0.001〜0.200%,Nb:0.020〜 Ta + 0.8Nd + 0.5Zr 0.200%,Ti + Sn + Sb + Pb + As + Bi 0.025%以下,O:0.0090%以下,其余由Fe和杂质构成。

    AUSTENITIC STAINLESS STEEL
    7.
    发明公开
    AUSTENITIC STAINLESS STEEL 审中-公开
    奥氏体不锈钢

    公开(公告)号:EP3178958A1

    公开(公告)日:2017-06-14

    申请号:EP16803537.6

    申请日:2016-06-03

    IPC分类号: C22C38/00 C22C38/60

    摘要: An austenitic stainless steel with a chemical composition including in terms of mass%: 0.05 to 0.13% of C, 0.10 to 1.00% of Si, 0.10 to 3.00% ofMn, 0.040% or less of P, 0.020% or less of S, 17.00 to 19.00% of Cr, 12.00 to 15.00% of Ni, 2.00 to 4.00% of Cu, 0.01 to 2.00% of Mo, 2.00 to 5.00% of W, 2.50 to 5.00% of 2Mo+W, 0.01 to 0.40% of V, 0.05 to 0.50% of Ti, 0.15 to 0.70% ofNb, 0.001 to 0.040% of Al, 0.0010 to 0.0100% of B, 0.0010 to 0.0100% of N, 0.001 to 0.20% of Nd, 0.002% or less of Zr, 0.001% or less of Bi, 0.010% or less of Sn, 0.010% or less of Sb, 0.001% or less of Pb, 0.001% or less of As, 0.020% or less of Zr+Bi+Sn+Sb+Pb+As, 0.0090% or less of O, and a remainder including Fe and impurities.

    摘要翻译: 以质量%计含有C:0.05〜0.13%,Si:0.10〜1.00%,Mn:0.10〜3.00%,P:0.040%以下,S:0.020%以下的化学组成的奥氏体系不锈钢 至19.00%的Cr,12.00至15.00%的Ni,2.00至4.00%的Cu,0.01至2.00%的Mo,2.00至5.00%的W,2.50至5.00%的2Mo + W,0.01至0.40%的V, Ti:0.05〜0.50%,Nb:0.15〜0.70%,Al:0.001〜0.040%,B:0.0010〜0.0100%,N:0.0010〜0.0100%,Nd:0.001〜0.20%,Zr:0.002% 以下,Sn:0.010%以下,Sb:0.010%以下,Pb:0.001%以下,As:0.001%以下,Zr:Bi + Sn + Sb:Pb + As:0.020% O:0.0090%以下,余量包含Fe和杂质。