珠光体-奥氏体异种钢焊接接头中碳迁移的跟踪观测
Observation of Carbon Distribution in Pearlite-Austenite Dissimilar Steel Welded Joints
摘 要
利用场发射枪超高分辨扫描电镜(FESEM)和能谱仪(EDS),跟踪研究了珠光体-奥氏体异种钢焊接接头中熔合区的碳迁移现象.结果表明：接头在焊后热处理过程中,熔合区附近发生明显的碳迁移现象.随着热处理时间的延长,类马氏体层的宽度并无明显的变化;但在不同宽度的类马氏体层中,碳迁移呈现不同的行为,相比窄类马氏体层,碳在宽类马氏体层中的迁移速度更快.
接头
碳迁移
dissimilar welding
welded joint
carbon distribution
Abstract
Carbon migration process around the fusion boundary in the pearlite-austenite dissimilar steel welded joints was studied with “in-situ” mode by using FESEM and EDS.The carbon migration occurred obviously in the fusion boundary during post-weld heat treatment.The width of the martensite-like layer kept invariable during heat treatment period.However,carbon migration played different actions in various widths of martensite-like layers,i.e.,the migration rate in a wide martensite-like layer was faster than that in a narrow martensite-like layer.
中图分类号 TG441.8
所属栏目
基金项目 石油科技中青年创新基金资助项目(2002CX05);教育部全国优秀博士学位论文作者专项资金资助项目(200233)
收稿日期 2005/1/22
修改稿日期 2005/2/1
网络出版日期
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备注黄文长(1975-),男,福建上杭人,工程师,硕士研究生.
引用该论文: HUANG Wen-zhang,PAN Chun-xu,FU Qiang. Observation of Carbon Distribution in Pearlite-Austenite Dissimilar Steel Welded Joints[J]. Materials for mechancial engineering, 2006, 30(4): 17～19
黄文长,潘春旭,付强. 珠光体-奥氏体异种钢焊接接头中碳迁移的跟踪观测[J]. 机械工程材料, 2006, 30(4): 17～19
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参考文献
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