共搜索到6214条信息，每页显示10条信息，共622页。用时：0小时0分0秒378毫秒
, China) Abstract: The effects of minor Sc on the microstructures and mechanical properties of friction stir welding (FSW) joint of Al-Zn-Mg-Zr alloy were studied by hardness test, tensile property test... strengthening caused by friction stir welding. The decrease of strength in head affected zone (HAZ) is due to coarsening of precipitated phase. The fine grain strengthening and precipitation strengthening......
Trans. Nonferrous Met. Soc. China 24(2014) 1709-1716 Friction stir keyholeless spot welding of AZ31 Mg alloy-mild steel Zhong-ke ZHANG1, Xi-jing WANG1, Pei-chung WANG2, Gang ZHAO1 1. State Key... Mound Road, Warren, MI, 48090, USA Received 3 July 2013; accepted 18 November 2013 Abstract: Friction stir keyholeless spot welding (FSKSW) using a retractable pin for 1.0 mm thick galvanized mild......
高,横焊及仰焊时易导致熔池大量坠流,故所得的熔焊接头强度并不理想[5].尤其是,由于铅沸点低,在传统熔焊过程中蒸发的铅易与空气中的氧化合,生成有毒的氧化物污染环境,会对人身体造成严重的伤害.因此,铅合金的优质,高效,绿色焊接是其广泛应用必须解决的问题. 搅拌摩擦焊接(Friction stir welding,FSW)是1991年由英国焊接研究所发明的固态连接技术.由于热输入低,无熔化,接头力学性... welding[J]. Transactions of Nonferrous Metals Society of China, 2017, 27(7): 1507-1516. [7] PADHY G K, WU C S, GAO S. Friction stir based welding and processing technologies-processes, parameters......
; friction stir spot welding; microhardness; microstructure 1 Introduction Among the aims for future years in the automotive industry are the expansion and implementation of new technologies including a broad application of the friction stir spot welding (FSSW) of similar and dissimilar materials. FSSW is a variant of friction stir welding (FSW) for spot welding applications. A non-consumable rotating......
alloy couple plates were successfully friction-stir welded, and no plunge-through defect induced by the press amount of tool-shoulder was observed in the multi-pass repairing welding process... alloy; friction stir welding; weld defect; telescopic stir-pin; multi-pass welding 搅拌摩擦焊(Friction stir welding, FSW)作为一种多用于铝合金的新型固相连接技术,可避免传统熔化焊造成的焊缝冶金缺陷[1-3].FSW是一种利用高速旋转的非消耗式搅拌头扎入工件,在行进过程中通过其摩擦和搅拌产......
Microstructure Distribution and Tensile Anisotropy of Dissimilar Friction Stir Welded AM60 and AZ31 Magnesium AlloysJun-Lei Zhang1,2,Han Liu1,2,Yu-Lu Xie1,2,Guang-Sheng Huang1,2,Xiang Chen1,2,Bin... Alloys , Chongqing University摘 要:The microstructure distribution, tensile anisotropy and fracture behaviors in the dissimilar friction stir welded joint......
; 文献标识码: A Numerical simulation of 2D friction stir welding process ZHAO Yan-hua, LIN San-bao... was regarded as a laminar, viscous and non-Newtonian liquid flows past a rotating cylinder pin. Based on fluid mechanics a two-dimensional friction stir welding (FSW) process model was developed......
Optimization of cold-sprayed AA2024/Al2O3 metal matrix composites via friction stir processing: Effect of rotation speedsKang Yang1,Wenya Li1,Chunjie Huang2,Xiawei Yang1,Yaxin Xu11. State Key Laboratory of Solidification Processing,Shaanxi Key Laboratory of Friction Welding Technologies,School of Materials Science and Engineering,Northwestern Polytechnical University2. IRTES EA7274,Université......
Quality and mechanical property of aluminum joints after friction stir welding YIN Kun, HUANG Chongxiang, WANG Yanfei, WANG Mingsai, HUANG Aihui (School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China) Abstract: Friction stir welding (FSW) joints of AA1050 under various ratios of rotational speed to welding speed (ω/v) were studied. The effects of ω/v on surface......
包Al层聚集对搅拌摩擦焊接头力学性能的影响康旭1,史清宇1,孙凯1,王鑫2(1.北京市清华大学机械工程系先进成形制造教育部重点实验室2.清华大学 核能与新能源技术研究院)摘 要:通过拉伸以及三点弯曲实验,研究了底部包Al层聚集现象对搅拌摩擦焊接头力学性能的影响.利用OM,SEM和EDS分析了底部包Al层聚集现象降低接头力学性能的原因.实验结果表明:焊接前未去除包Al层的试样,其抗拉和抗弯强度要比焊前或者焊后去除包Al层的试样低.焊接过程中,焊缝底部平铺的包Al层在搅拌头的作用下,被流动的金属材料挤到了洋葱环的两......
