发明申请
- 专利标题： DUPLEX STAINLESS STEEL SUPERIOR IN CORROSION RESISTANCE OF WELD
- 专利标题（中）： 双相不锈钢焊机耐腐蚀电阻
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申请号： US14004039申请日： 2012-03-09
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公开(公告)号： US20130343948A1公开(公告)日： 2013-12-26
- 发明人: Yusuke Oikawa , Shinji Tsuge , Hiroshige Inoue , Ryo Matsuhashi
- 申请人： Yusuke Oikawa , Shinji Tsuge , Hiroshige Inoue , Ryo Matsuhashi
- 优先权： JP2011-051071 20110309; JP2012-030142 20120215
- 国际申请： PCT/JP2012/056154 WO 20120309
- 主分类号： C22C38/58
- IPC分类号： C22C38/58 ; C22C38/44 ; C22C38/42 ; C22C38/06 ; C22C38/50 ; C22C38/00 ; C22C38/48 ; C22C38/52 ; C22C38/54 ; C22C38/46 ; C22C38/02
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