补焊对ZTC4钛合金组织和性能的影响

赵嘉琪; 吴国清; 杨伟光; 南海

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补焊对ZTC4钛合金组织和性能的影响
Effects of Welding Repairs on the Microstructure and Properties of ZTC4 Ti Alloy
2011年31卷第5期页码：415-417
纸质出版日期： 2011 ，
DOI：

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[1]赵嘉琪,吴国清,杨伟光,南海.补焊对ZTC4钛合金组织和性能的影响[J].特种铸造及有色合金,2011,31(05):415-417+387.

Zhao Jiaqi1, Wu Guoqing2, Yang Weiguang2, et al. Effects of Welding Repairs on the Microstructure and Properties of ZTC4 Ti Alloy[J]. Special Casting & Nonferrous Alloys, 2011,31(5):415-417.
[1]赵嘉琪,吴国清,杨伟光,南海.补焊对ZTC4钛合金组织和性能的影响[J].特种铸造及有色合金,2011,31(05):415-417+387. DOI：

Zhao Jiaqi1, Wu Guoqing2, Yang Weiguang2, et al. Effects of Welding Repairs on the Microstructure and Properties of ZTC4 Ti Alloy[J]. Special Casting & Nonferrous Alloys, 2011,31(5):415-417. DOI：

摘要

分析了ZTC4钛合金补焊前后的组织特征

并通过拉伸、弯曲和冲击性能测试探讨了补焊对ZTC4钛合金铸板力学性能的影响。结果表明

补焊改变了ZTC4钛合金的原始组织

补焊区域和热影响区均出现了针状α′马氏体组织。ZTC4钛合金铸板仅经过补焊处理后其抗拉强度、弯曲强度变化不大

但显著降低了伸长率和冲击韧度

两者分别下降了35%和30%。

Abstract

Microstructures of ZTC4 Ti alloy casting sheets before and after welding repairs were analyzed

and effects of welding repairs on tensile

bending strength and impacting properties of the alloy sheets were investigated.The results show that initial microstructure of the alloy sheets is changed with the welding repairs.Acicular α’ martensite can be observed in the welding zone and heat-affected zone after welding repairs.Although change of tensile strength and bending strength of the alloy sheets can be ignored

elongation and impacting toughness after welding repairs are greatly decreased by 35% and 30%

respectively.