Development and property of a new ultrahigh-strength stainless steel for the marine service
LIU Zhen-bao1，LIANG Jian-xiong1，LI Wen-hui1，ZHANG Xiu-li2，SUN Yong-qing1，WANG Chang-jun1
（1. Special Steel Institute， Central Iron and Steel Research Institute， Beijing 100081， China 2. Technique Center，Fushun Special Steel Group， Fushun 113001， Liaoning， China）
Abstract：A new ultra-high strength stainless steel with ultra-high purity has been successfully developed through the-precipitation hardening of intermetallic compound and carbide and ultra-clean. The results show that its tensile strength[Rm] is 1 940 MPa，and the fracture toughness，[KIC，]is more than 90 MPa·m1/2. Besides，it also shows good fatigue and high-temperature mechanical properties. The corrosion resistance of the steel is equivalent to that of 15-5PH stainless steel under the condition of the marine atmosphere and sea water immersion，which is much better than that of AerMet100 steel at the same strength level. Due to the excellent combination of mechanical and anti-corrison properties，the developed steel is expected to be widely used in the fields of aviation，aerospace，advanced machinery，and nuclear.
刘振宝，梁剑雄，李文辉，张秀丽，孙永庆 ，王长军. 耐海洋环境腐蚀高强度不锈钢的设计与性能[J]. 钢铁, 2015, 50(6): 57-62.
LIU Zhen-bao，LIANG Jian-xiong，LI Wen-hui，ZHANG Xiu-li，SUN Yong-qing，WANG Chang-jun. Development and property of a new ultrahigh-strength stainless steel for the marine service. Iron and Steel, 2015, 50(6): 57-62.
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