工具钢超塑性固态焊焊接面断口特征区域分析  

Analysis on characteristics of fracture appearance of superplastic solid-state welded joint of tool steels

作　　者：张柯柯[1] 刘帅[1] 岳云[1] 马宁[1] 杨蕴林[2] 张占领[2] 于华[2] 

机构地区：[1]河南科技大学材料科学与工程学院,洛阳市471003 [2]河南省有色金属材料科学与加工技术重点实验室,洛阳市471003

出　　处：《焊接》2009年第4期22-25,共4页Welding & Joining

基　　金：国家自然科学基金项目(50774029);河南省杰出青年科学基金项目(074100510011);河南省高校创新人才基金资助项目(教高2004-294);河南省自然科学基金项目(0511050800)

摘　　要：采用扫描电镜及俄歇微探针等检测手段,通过对40Cr/T10A、Cr12MoV钢超塑性固态焊接过程中焊接面断口的观察分析,认为超塑性固态焊接接头形成过程中焊接面各微区焊合状态是非均匀的,并呈现出不同的断口形貌特征;若按微观上断口形貌特征分类,整个断口可分为类原始界面区、准冶金结合区和冶金结合区3个特征区域;接头形成过程可描述为冶金结合区、准冶金结合区逐渐增大而类原始界面区逐渐减小的过程。The fracture appearances of superplastic solid-state welded joint of tool steels such as 40Cr/T10A、Cr12MoV were analyzed by scanning electron microscopy and Auger microprobe.The results show that each micro-zone of welded surface in formation of superplastic solid state welded joint is uneven,which presents different appearance characteristic of fracture.The whole fracture can be divided into three characteristic zones:quasi-original interface zone,quasi-metallurgical bonded zone and metallurgical bonded zone according to the appearance characteristic of fracture.The formation of superplastic solid state welded joint can be thought as the process of the metallurgical and quasi-metallurgical bonded zone being increased and quasi-original interface zone being decreased.

关 键 词：工具钢 超塑性固态焊接 断口分析 特征区域 

分 类 号：TG457.11[金属学及工艺—焊接]