摘要
本文以Cr25Ni5Mo2Cu3REx双相不锈钢为对象,采用金相显微镜、万能拉伸试验机、冲击试验机和恒电位仪分析测试手段,研究了1#稀土加入量对Cr25Ni5Mo2Cu3REx双相不锈钢的显微组织、力学性能及腐蚀性能的影响规律。试验结果表明,奥氏体相随着1#稀土加入量的增加先增加后减少,强度随着1#稀土加入量的增加而增加,塑性、韧性和腐蚀性能随1#稀土加入量的增加先增大后下降。当1#稀土加入量在0.10%时,Cr25Ni5Mo2Cu3REx双相不锈钢综合性能最好。
Effect of RE content on micmstructure, mechanical properties and corrosion resistance of Cr25NiSMo2Cu3REx duplex stainless steel were studied by using metallogmphic microscope, universal tensile testing machine, impact test enginery and potentiotat. The results show that with incresse of RE content, austenite content first increases and then decreases, the strength increases, and plasticity, toughness and electrochemical corrosion resistance first increase and then decrease. When RE content is 0. 1% ,Cr25NiSMo2Cu3REx duplex stainless steel comprehensive pertbrmance is the best.
出处
《稀土》
EI
CAS
CSCD
北大核心
2013年第2期56-60,共5页
Chinese Rare Earths
基金
国家自然科学基金项目资助(50664004)
关键词
双相不锈钢
显微组织
力学性能
腐蚀性能
稀土
duplex stainless steel
microstructure
mechanical properties
corrosion resistant
rare earth
