Abstract: Hot tension test with strain rate 5×10^-3 s^-1 and hot reduction test with deformation 60% and strain rate 1×10⁰s^-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    950~1200℃ 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.

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1×10⁰s^-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。

关键词: 超级双相不锈钢, 00Cr25Ni7Mo4N, , 铈, 热加工性