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	两种TIG 焊工艺对LD10接头力学性能的影响
其他题名	Effect of two different TIG welding processes on mechanical properties of LD10 aluminum alloy joint
	康举 1; 李艳军 1; 吴爱萍 1; 赵刚 2; 高彦军 2; 邹贵生 1
来源期刊	焊接学报
ISSN	0253-360X
出版年	2014
卷号	35 期号:3 页码:109-112
中文摘要	对5. 5 mm 厚度的LD10(2A14-T6)铝合金进行了两种工艺的TIG 焊接,采用热电偶测定了接头的热循环曲线,分析了不同工艺对接头力学性能的影响. 结果表明,两面三层焊热影响区中同一点先后经历三次热循环,导致过时效区硬度大幅下降,拉伸时断裂于此; 焊缝区各层所经历的热过程不同,导致其硬度起伏较大. 与两面三层焊相比,单面两层焊有更高的抗拉强度,为358. 3 MPa,热影响区范围窄,且过时效区硬度比三层焊时高,但焊缝中气孔和晶界网状分布的第二相的存在使焊缝和接头的塑性相对降低.
英文摘要	5.5 mm thick LD10CS (2014-T6) aluminum alloy plates, were TIG welded with-two different processes, and the welding thermal cycle was measured by thermocouples. The effect of thermal cycle on microstructure and mechanical properties of the two joints was analyzed by optical microscopy, micro- hardness test and tensile test. Since the heat affected zone in the two-sided three layers welding joint undergone three thermal cycles,resulting in the hardness of the over aging zone drop significantly arid tensile fracture occurred there. While each layer in the weld area experienced different thermal processes,leading to the hardness fluctuation seriously. Compared with the two-sided three layers welding, the joint of single-sided two layers welding has higher tensile strength, which is 358.3 MPa, and the width of the HAZ is narrower and the hardness in the over aging zone is higher than three layers welding joint. But due to the existing of pores and network-like distribution of secondary phase along the grain boundaries, the plasticity of the joint decreases.
中文关键词	LD10铝合金 ; TIG 焊 ; 焊接热循环 ; 力学性能
英文关键词	LD10CS aluminum alloy TIG welding welding thermal cycle mechanical properties
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METALLURGY METALLURGICAL ENGINEERING
WOS研究方向	Metallurgy & Metallurgical Engineering
CSCD记录号	CSCD:5101908
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231329
作者单位	1.清华大学, 先进成形制造教育部重点实验室, 北京 100084, 中国; 2.首都航天机械公司, 北京 100076, 中国
推荐引用方式 GB/T 7714	康举,李艳军,吴爱萍,等. 两种TIG 焊工艺对LD10接头力学性能的影响[J],2014,35(3):109-112.
APA	康举,李艳军,吴爱萍,赵刚,高彦军,&邹贵生.(2014).两种TIG 焊工艺对LD10接头力学性能的影响.焊接学报,35(3),109-112.
MLA	康举,et al."两种TIG 焊工艺对LD10接头力学性能的影响".焊接学报 35.3(2014):109-112.