铈对超级双相不锈钢00Cr25Ni7Mo4N热加工性能的影响  

Influence of Cerium on Hot Workability of Super Duplex Stainless Steel 00Cr25Ni7Mo4N

作　　者：俞飞[1,2] 宋志刚[2] 郑文杰[2] 郭忠诚[1] 季祥民[2] 丰涵[2] 

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093 [2]钢铁研究总院结构材料研究所,北京100081

出　　处：《特殊钢》2010年第4期58-60,共3页Special Steel

摘　　要：通过Gleeble-1500D热模拟试验机对0～0.034%Ce的超级双相不锈钢00Cr25Ni7Mo4N(%:0.016～0.020C、24.50～24.72Cr、7.06～7.18Ni、3.61～3.73Mo、0.26～0.27N)进行了950～1 200℃、应变速率5×10-3s-1的热拉伸和变形量60%、应变速率1×10~0s^(-1)的热压缩试验。结果表明,适量铈的加入能提高00Cr25Ni7Mo4N钢的热塑性,铈含量为0.012%时有最好的热塑性;铈含量为0.021%以上时,该钢的峰值应力低于未加稀土钢;铈的加入有助于钢提前达到稳态流变阶段。Hot tension test with strain rate 5× 10 -3 s-1 and hot reduction test with deformation 60% and strain rate 1 × 10 -3 s-1for 0 - 0. 034% Ce super duplex stainless steel 00Cr25Ni7Mo4N （ % ： 0. 016 ~ 0. 020C, 24. 50 - 24. 72Cr, 7.06 -7. 18Ni, 3.61 -3.73Mo, 0. 26 -0. 27N） at 950 - 1 200 ℃ have been carried out by using Gleeble-1500D thermal simulation machine. Results show that adding suitable cerium is available to increase the hot plasticity of steel 00Cr25Ni7Mo4N, and the steel containing 0. 012Ce% has optimum hot plasticity ; as the Ce content is more than 0. 021% , the peak stress of the steel is lower than that of steel non-adding rare earth elements ; and adding Ce is available to reach steady state deformation stage in advance.

关 键 词：超级双相不锈钢 00CR25NI7MO4N 铈 热加工性 

分 类 号：TG142.13[一般工业技术—材料科学与工程]