冷却时间对2205双相不锈钢焊接热影响区组织与性能的影响
Effect of Cooling Time on Microstructure and Property of 2205 Duplex Stainless Welding Heat Affect Zone
摘 要
采用热模拟和其它方法研究了2205双相不锈钢的模拟焊接热影响区(HAZ)的冲击韧度和金相组织的关系,探讨了冷却时间t5/8和t12/8对模拟HAZ冲击韧度的影响规律.结果表明:冷却时间对该钢的组织和性能有很大的影响,随冷却时间的增加,铁素体含量减少,奥氏体含量增加,铁素体中的金属中间相析出增多.固定t8/5时,随t12/8的增加,冲击韧度增强;而固定t12/8时,随t8/5的增加,冲击韧度降低.
热影响区
热模拟
duplex stainless steel
HAZ
thermal simulation
Abstract
The relationship of the microstructures and impact toughness of simulated welding Heat Affect Zone (HAZ) in 2205 Duplex Stainless Steel (DSS) were investigated by using material thermal simulator technique and others analyses methods.The effect rules of cooling time on the impact toughness of simulated HAZ were studied at the same time.The results show that the cooling time has strong influences on the impact toughness of the simulated HAZ,that the ferrite content decreases and precipitate of carbide and nitride in ferrite increases as increasing cooling time,that impact toughness increases with the increase of the cooling time t12/8 for a certain cooling time t8/5,and that that impact toughness decreases with the increase of the cooling time t8/5 for a certain cooling time t12/8.
中图分类号 TG142.71
所属栏目
基金项目 中国石油天然气集团公司石油管力学和环境行为重点实验室基金资助项目(ZYT0404)
收稿日期 2005/10/17
修改稿日期 2006/10/26
网络出版日期
作者单位点击查看
备注李为卫(1965-),男,陕西蓝田人,高级工程师,硕士.
引用该论文: LI Wei-wei,XIONG Qing-ren,GAO Rong,ZHANG Jian-xun,LI Qing-yan. Effect of Cooling Time on Microstructure and Property of 2205 Duplex Stainless Welding Heat Affect Zone[J]. Materials for mechancial engineering, 2006, 30(11): 59～62
李为卫,熊庆人,高蓉,张建勋,李庆琰. 冷却时间对2205双相不锈钢焊接热影响区组织与性能的影响[J]. 机械工程材料, 2006, 30(11): 59～62
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参考文献
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【2】吴玖,姜世振,韩俊嫒,等.双相不锈钢[M].北京:冶金工业出版社,1999.
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【2】吴玖,姜世振,韩俊嫒,等.双相不锈钢[M].北京:冶金工业出版社,1999.
【3】Rouault P,Bonnet C.Make the duplex and superduplex welding easier through metallurgical and practical simple recommendations[A].International Duplex Stainless Steel Conference[C].Beijing:2003.
【4】Esa Kivineva,Zhiliang Zhou,NilsErik Hannerz.Grain growth with simulated weld cycles as studied on structural QT steel,on duplex stainless steel and Ti6Al4V[J].International Journal for the Joining of Materials,2001,13(4):C1-6.
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