胡可,胡树兵,彭博,王璐,韩志磊

• 1:华中科技大学材料成形与模具技术国家重点实验室

摘要(Abstract)：

利用高能脉冲精密冷补技术(LHPPR)在Cr12MoV钢基体焊接M2丝材,研究脉冲电流,脉冲宽度对焊层截面的形貌,组织硬度的影响。结果表明,随着脉冲电流的增大,堆积宽度增大,堆积高度有少许降低;随着脉冲宽度的增加,堆积宽度高度随之增加。焊层组织为典型凝固组织,随着能量的增高,晶粒会长大,焊层和基体呈冶金结合,结合界面无裂纹孔隙等缺陷,热影响区由表面向基体组织由马氏体向马氏体+回火索氏体转变。焊层显微硬度达700~850 HV,远高于300 HV左右的基体。

关键词(KeyWords)： 高能脉冲精密冷补;模具修复;工艺参数;显微组织;Cr12MoV钢

Abstract:

Keywords:

基金项目(Foundation): 2010年省部产学研合作重大项目(2010A090200047);; 国际热核聚变实验堆(ITER)计划专项(2010GB109000);; 华中科技大学与材料成型与模具技术国家重点实验室自主课题(09-10)

作者(Author): 胡可,胡树兵,彭博,王璐,韩志磊

DOI: 10.13289/j.issn.1009-6264.2014.s1.025

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