哈尔滨工程大学学报Issue(2)：276-281,6.DOI:10.3969/j.issn.1006-7043.201405040
节镍奥氏体不锈钢 Cr18Mn6Ni4N 的组织及性能
Microstructure and property of Cr18Mn6Ni4N nickel-saving austenite stainless steel
摘要
Abstract
In order to save nickel resource and obtain a new type of stainless steel that can take place of the 304 stainless steel, the mechanical properties and corrosion resistance of nickel-saving austenitic stainless steels with different alloy compositions (17.8~19.1%Cr, 3.93~6.05%Mn, 3.58~4.62%Ni, 0.32~0.42%N) were studied af-ter solution heat treatment.The results indicated that the mechanical properties and corrosion resistance of the Cr18. 4Mn5.98Ni4.62N0.42 austenitic stainless steel are similar to that of"304"stainless steel.The microstructural evo-lution after aging treatment, stability of austenite during cold working and the phase change process of martensite induced by deformation were analyzed.The results indicate that the nose temperature of Cr2N phase precipitation is 800℃, and with the increase in the annealing time, granular Cr2N phases precipitate along grain boundaries first-ly, and then lamellar precipitates begin to grow into grains.Deformation-induced martensite did not appear at a re-duction rate of 18.5%in cold rolling.However, with increasing deformation, the amount of lamellar ε′martensite first increased, then decreased, and at last it disappeared.The amount of lath martensite gradually increased.Al-though the relative magnetic conductivity rose with increasing deformation, the austenite stability of Cr18.4Mn5. 98Ni4.62N0.42 austenitic stainless steel is better than that of"304"stainless steel.Therefore, Cr18.4Mn5.98Ni4. 62N0.42 austenitic stainless steel can replace that of"304"stainless steel.关键词
节镍/奥氏体不锈钢/力学性能/耐蚀性能/组织Key words
nickel-saving/austenitic stainless steel/mechanical properties/corrosion resistance/microstructure分类
矿业与冶金引用本文复制引用
房菲,李静媛,王一德,秦丽雁..节镍奥氏体不锈钢 Cr18Mn6Ni4N 的组织及性能[J].哈尔滨工程大学学报,2015,(2):276-281,6.基金项目
国家自然科学基金资助项目（50974014，51174026）；十二五国家科技支撑计划资助项目（2012BAE04B02）． （）
