[1]康福伟,侯兆敏,宿露,等.电流对 ZL114A 补焊工艺孔组织及力学性能的影响[J].哈尔滨理工大学学报,2017,(05):116-120.[doi:10. 15938/j. jhust. 2017. 05. 021]
 KANG Fu-wei,HOU Zhao-min,SU Lu,et al.Effect of Welding Current on Microstructure and Mechanical Properties of ZL114A Repair Welding Process Holes[J].哈尔滨理工大学学报,2017,(05):116-120.[doi:10. 15938/j. jhust. 2017. 05. 021]
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电流对 ZL114A 补焊工艺孔组织及力学性能的影响()
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《哈尔滨理工大学学报》[ISSN:1007-2683/CN:23-1404/N]

卷:
期数:
2017年05期
页码:
116-120
栏目:
材料科学与工程
出版日期:
2017-10-25

文章信息/Info

Title:
Effect of Welding Current on Microstructure and Mechanical Properties of ZL114A Repair Welding Process Holes
文章编号:
1007-2683(2017)05-0116-05
作者:
康福伟 侯兆敏 宿露 刘洪汇 乔昕
1. 哈尔滨理工大学 材料科学与工程学院,黑龙江 哈尔滨 150040; 2. 中航工业哈尔滨东安发动机(集团)有限责任公司,黑龙江 哈尔滨 150066
Author(s):
KANG Fu-wei 1 HOU Zhao-min 1 SU Lu 1 LIU Hong-hui 2 QIAO Xin 2
1. School of Materials Science and Engineering,Harbin University of Science and Technology,Harbin 150040,China; 2. Aviation Industry of China Harbin DongAn Engine (Group) Corporation LTD,Harbin 150066,China
关键词:
ZL114A 合金补焊电流组织力学性能
Keywords:
ZL114A aluminum alloy repair welding current microstructure mechanical properties
分类号:
TG445
DOI:
10. 15938/j. jhust. 2017. 05. 021
文献标志码:
A
摘要:
利用光学显微镜、扫描电子显微镜、拉伸实验机等设备分别对 200A、240A 和 280A 3 种不同焊接电流补焊 ZL114A 合金工艺孔的组织及力学性能进行了研究。实验结果表明,在热影响区随着电流强度的增加,其宽度增加,但晶粒尺寸基本不变,而在熔凝区随着电流强度的增加晶粒尺寸明显增加;在 240A 时,熔凝区形成的气孔数量最少,并且热影响区中共晶相分布均匀,硬度最高。拉伸实验表明,不同电流强度补焊的 ZL114A 工艺孔拉伸试样断裂位置均发生在热影响区, 但在电流强度为 240A 时,补焊后的力学性能最接近母材,抗拉强度达到了母材强度的 95. 0%,所以 240A 为 ZL114A 工艺孔最佳补焊电流。
Abstract:
The effects of welding currents of 200A,240A and 280A on microstructure and mechanical properties of ZL114A alloy repair welding process holes were investigated using optical and scanning electronic microscope (SEM),tensile testing machine,respectively. With the increase of current intensity,the heat affected zones widen and grain size almost unchanges,but the grain size increases apparently in fusion zone. At 240A,the amount of pore is the least at fusion zone,and the eutectic phases distribute uniformly in heat affected zone,the hardness reaches the maximum value. The results of tensile test show that the fracture of tensile samples all locate in heat affected zone. At 240A,the sample tensile strength is closest to that of the base metal,and reaches ninety-five percent of the base metal tensile strength. So the optimized repair welding current is 240A

相似文献/References:

[1]康福伟,张继敏,樊德智,等. ZL114A 合金热变形本构方程[J].哈尔滨理工大学学报,2018,(02):134.[doi:10. 15938/j. jhust. 2018. 02. 024]
 KANG Fu-wei,ZHANG Ji-min,FAN De-zhi,et al. Constitutive Equation of Hot Deformation of ZL114A Alloy[J].哈尔滨理工大学学报,2018,(05):134.[doi:10. 15938/j. jhust. 2018. 02. 024]

更新日期/Last Update: 2017-11-28