Thermo-mechanical Characteristics and Microstructure and Properties of Micro-stir Friction Welding of H62 Brass Ultrathin Plate
Zhang, Changqing; Qin, Zhuo; Rong, Chen; Shi, Wenchen; Wang, Shuwen; Wang, Xijing
2020-06-20
发表期刊Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
ISSN05776686
卷号56期号:12页码:65-72
摘要Micro-connections of copper and copper alloys can be widely used in aviation technology, electronic technology and energy technology, but the material has a high softening temperature, a reduction in frictional heat generation due to the reduction of plastic metal in the weld zone of the sheet, and an increase in the specific surface area of the sheet The problems such as the fast heat transfer speed make the micro friction stir welding(μFSW) process easy to produce welding defects and are not conducive to joint formation. Using 0.6 mm thick ultra-thin plate H62 brass as the research object, carry out butt welding experimental research, in-depth study of the microstructure, mechanical properties and fracture morphology of the joint under different process parameters, and then optimize the process parameters; on this basis, analyze Changes in temperature, axial force and Transverse force during the process. The research shows that the weld seam is well formed after the process optimization, and the maximum tensile strength of the joint reaches 370 MPa, about 92.5% of BM; there is a clear dividing line between HAZ, TMAZ, and NZ at the weld, and NZ is horizontal and vertical. There is non-uniformity in grain shape and size. The highest NZ hardness is about 155.4 HV (approximately 119.5% of BM). Fracture failure easily occurs at the location with the smallest hardness (AS). The failure mechanism is ductile fracture. In the μFSW process, stable axial and Transverse forces can provide appropriate heat input and better extrusion and agitation to obtain a good weld. Through basic research on friction stir welding of high-melting-point copper and its alloy ultra-thin plates, it provides technical support for the promotion of materials for micro-connection technology. © 2020 Journal of Mechanical Engineering.
关键词Brass Copper alloys Ductile fracture Friction Hardness Heat affected zone Heat transfer Horizontal wells Microstructure Morphology Optimization Research laboratories Sheet metal Tensile strength Aviation technology Electronic technologies Experimental research Fracture morphology Frictional heat generation Microstructure and properties Softening temperature Thermo-mechanical characteristics
DOI10.3901/JME.2020.12.065
收录类别EI
语种中文
出版者Editorial Office of Chinese Journal of Mechanical Engineering
EI入藏号20202908958333
EI主题词Friction stir welding
EI分类号512.1.1 Oil Fields - 538.2 Welding - 538.2.1 Welding Processes - 544.2 Copper Alloys - 641.2 Heat Transfer - 901.3 Engineering Research - 921.5 Optimization Techniques - 951 Materials Science
来源库Compendex
分类代码512.1.1 Oil Fields - 538.2 Welding - 538.2.1 Welding Processes - 544.2 Copper Alloys - 641.2 Heat Transfer - 901.3 Engineering Research - 921.5 Optimization Techniques - 951 Materials Science
引用统计
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/115016
专题材料科学与工程学院
作者单位State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位兰州理工大学
第一作者的第一单位兰州理工大学
推荐引用方式
GB/T 7714
Zhang, Changqing,Qin, Zhuo,Rong, Chen,et al. Thermo-mechanical Characteristics and Microstructure and Properties of Micro-stir Friction Welding of H62 Brass Ultrathin Plate[J]. Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,2020,56(12):65-72.
APA Zhang, Changqing,Qin, Zhuo,Rong, Chen,Shi, Wenchen,Wang, Shuwen,&Wang, Xijing.(2020).Thermo-mechanical Characteristics and Microstructure and Properties of Micro-stir Friction Welding of H62 Brass Ultrathin Plate.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,56(12),65-72.
MLA Zhang, Changqing,et al."Thermo-mechanical Characteristics and Microstructure and Properties of Micro-stir Friction Welding of H62 Brass Ultrathin Plate".Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 56.12(2020):65-72.
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