公开(公告)号：US20150191813A1

公开(公告)日：2015-07-09

申请号：US14608849

申请日：2015-01-29

Applicant: NIPPON STEEL & SUMITOMO CORPORATION

Inventor： Jun Maki ,  Kazuhisa Kusumi ,  Masayuki Abe ,  Masao Kurosaki

IPC: C23C2/12 ,  C23C2/28 ,  C23C2/26 ,  C23C2/34 ,  C21D8/02 ,  C21D9/46 ,  C22C38/32 ,  C22C38/28 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/60 ,  C22C38/54 ,  C22C38/50 ,  C22C38/44 ,  C22C38/38 ,  C22C38/22 ,  C22C38/20 ,  C22C38/14 ,  C23C2/02

CPC classification number: C23C2/12 ,  B21B1/26 ,  C21D1/673 ,  C21D7/13 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D9/46 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/20 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60 ,  C23C2/02 ,  C23C2/26 ,  C23C2/28 ,  C23C2/34 ,  Y10T428/12611 ,  Y10T428/12757 ,  Y10T428/12951 ,  Y10T428/12972 ,  Y10T428/31678

Abstract: A hot stamped high strength part in which the propagation of cracks which form at the plating layer at the time of hot stamping when hot stamping aluminum plated steel sheet is suppressed and the post painting anticorrosion property is excellent even without adding special ingredient elements which suppress formation of cracks in an aluminum plating layer is provided.A hot stamped high strength part which is excellent in post painting anticorrosion property, which hot stamped high strength part has an alloy plating layer which includes an Al—Fe intermetallic compound phase on the surface of the steel sheet, wherein the alloy plating layer is comprised from phases of a plurality of intermetallic compounds, a mean linear intercept length of crystal grains of a phase containing Al: 40 to 65 mass % among the phases of the plurality of intermetallic compounds is 3 to 20 μm, an average value of thickness of the Al—Fe alloy plating layer is 10 to 50 μm, and a ratio of the average value of thickness to the standard deviation of thickness of the Al—Fe alloy plating layer satisfies the following relationship: 0

Abstract translation: 热冲压高强度部件，其中抑制热冲压镀铝钢板时在烫印时在镀层处形成的裂纹的传播，并且即使不添加抑制形成的特殊成分元素，后喷涂抗腐蚀性也优异 提供铝镀层中的裂纹。 热冲压高强度部件具有优良的后喷涂抗腐蚀性的热冲压高强度部件，在钢板表面上具有包含Al-Fe金属间化合物相的合金镀层，其中包含合金镀层 从多个金属间化合物的相中，多个金属间化合物的相中含有Al：40〜65质量％的相的晶粒的平均线性截距长度为3〜20μm，厚度的平均值 Al-Fe合金镀层为10〜50μm，Al-Fe合金镀层的厚度的平均值与厚度的标准偏差的比例满足以下关系：0 <厚度的平均值/ 厚度＆nlE; 0.15。

公开(公告)号：US20160355910A1

公开(公告)日：2016-12-08

申请号：US15117458

申请日：2015-02-25

Applicant: NIPPON STEEL & SUMITOMO CORPORATION

Inventor： Taizo MAKINO ,  Yukitru TAKESHITA ,  Naomitsu MIZUI ,  Yutaka WAKASU

IPC: C22C38/50 ,  C22C38/42 ,  B60B35/00 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C22C38/44 ,  C22C38/04

CPC classification number: C22C38/50 ,  B60B35/00 ,  B60B35/025 ,  B60B35/04 ,  B60Y2200/30 ,  C21D1/28 ,  C21D8/00 ,  C21D9/28 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/28 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46

Abstract: Provided is a rail vehicle axle having an excellent fatigue limit and notch factor. A rail vehicle axle according to the present embodiment has a chemical composition consisting of, in mass %, C: 0.20 to 0.35%, Si: 0.20 to 0.65%, Mn: 0.40 to 1.20%, P: 0.020% or less, S: 0.020% or less, Cu: 0 to 0.30%, Ni: 0 to 0.30%, Cr: 0 to 0.30%, Mo: 0 to 0.08%, Al: 0 to 0.100%, N: 0.0200% or less, V: 0 to 0.060%, and Ti: 0 to 0.020%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2): 0.58≦C+Si/8+Mn/5+Cu/10+Cr/4+V≦0.67  (1) Si+0.9Cr≧0.50  (2) where, each element symbol in Formulae (1) and (2) is substituted by the content (mass %) of a corresponding element.

Abstract translation: 提供了具有优异的疲劳极限和缺口因数的轨道车辆车轴。 根据本实施方式的轨道车辆轴具有质量％C：0.20〜0.35％，Si：0.20〜0.65％，Mn：0.40〜1.20％，P：0.020％以下的化学成分，S： 0.020％以下，Cu：0〜0.30％，Ni：0〜0.30％，Cr：0〜0.30％，Mo：0〜0.08％，Al：0〜0.100％，N：0.0200％ 至0.060％，Ti：0〜0.020％，余量为Fe和杂质，满足公式（1）和（2）：0.58‰C + Si / 8 + Mn / 5 + Cu / 10 + Cr / 4 + V‰0.67 Si + 0.9 Cr‰¥0.50其中，式（1）和（2）中的每个元素符号由相应元素的含量（质量％）代替。