发明名称 |
C+N AUSTENITIC STAINLESS STEEL HAVING HIGH STRENGTH AND EXCELLENT CORROSION RESISTANCE, AND FABRICATION METHOD THEREOF |
摘要 |
A C+N austenitic stainless steel with high mechanical strength and excellent corrosion resistance and a fabrication method thereof are provided. The C+N austenitic stainless steel consists of: 8 to 12 wt. % manganese; 15 to 20 wt. % chromium; 2 wt. % or less nickel; 4 wt. % or less tungsten; 2 wt. % or less molybdenum; 0.6 to 1.0 wt. % of total C+N content; a balance of iron; and unavoidable impurities. The austenitic stainless steel fabricated provides mechanical properties of a tensile strength of 850 MPa or higher and an uniform elongation of 45% or higher, obtained through controlling the contents of the interstitial elements and those of the substitutional elements. The alloy also provides corrosion resistance and a biocompatibility due to the minimized content of nickel which causes allergic reaction to the human body. Therefore, the C+N austenitic stainless steel is applicable in the fabrication of a variety of functional components and structural fields.
|
申请公布号 |
US2011226391(A1) |
申请公布日期 |
2011.09.22 |
申请号 |
US20090994815 |
申请日期 |
2009.08.20 |
申请人 |
KOREA INSTITUTE OF MACHINERY AND MATERIALS |
发明人 |
KIM SUNG-JOON;LEE TAE-HO;OH CHANG-SEOK;HA HEON-YOUNG |
分类号 |
C21D8/02;C22C38/22;C22C38/38;C22C38/44;C22C38/58 |
主分类号 |
C21D8/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|