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J. Cent. South Univ. (2012) 19: 402-407 DOI: 10.1007/s11771-012-1018-1 Estimation of deformed laser heat sources and thermal analysis on laser assisted turning of square member KIM Jae-hyun, KIM...-Verlag Berlin Heidelberg 2012 Abstract: Laser assisted machining (LAM) has difficulties in estimating temperature after applying a LAM process due to its very small heat input area, large energy......
Trans. Nonferrous Met. Soc. China 27(2017) 91-101 Stitch welding of Ti-6Al-4V titanium alloy by fiber laser Cui LI1, Bin LI2, Ze-feng WU1, Xiao-yong QI1, Bing YE1, Ai-hua WANG1,2 1. Hubei Provincial... of applications in aerospace vehicle manufacture. The laser stitch welding of Ti-6Al-4V titanium alloys was carried out by a 4 kW ROFIN fiber laser. Influences of laser welding parameters on the macroscopic......
得穿透的焊接接头,焊接接头的强度约只有母材的88.5%,焊缝的断裂机制是塑性和脆性断裂的混合机制.由于在焊缝中存在一些Laves 颗粒,这促进了微裂纹和微孔的形成和扩展,降低了焊接接头的抗拉强度. 关键词:激光焊接；焊缝；组织；力学性能 中图分类号:TG 156；TN 249 文献标识码:A Laser welding... and microvoids and decreases the tensile strength of the welded joint. Key words: laser welding; weld; microstructure; mechanical properties ......
Repair welding process of friction stir welding groove defect LIU Hui-jie(刘会杰), ZHANG Hui-jie(张会杰) State Key Laboratory of Advanced Welding Production Technology, Harbin Institute...; Abstract: The groove defect formed in the friction stir welding dramatically deteriorates weld appearances and mechanical properties......
激光焊接过程中残留液体金属的高速高倍在线观察温鹏1,获崎贤二1,山本元道1(1.北京市清华大学机械工程系)摘 要:采用高速摄像机和光学显微镜构成的摄像装置对激光焊接熔池后端的凝固行为进行高速高倍摄像,详细记录了柱状晶从液态熔池后部析出过程以及残留在已析出柱状晶周围的液体金属的凝固行为.采用液体Sn急冷将焊接过程中正在凝固的焊缝金属冷冻保存到室温,并与高速高倍摄像观察到的熔池后端的凝固行为进行了对比分析.对3种奥氏体不锈钢材料焊缝凝固过程中残留液体金属的存在范围进行了观察和比较.在线观察到的残留液体金属是焊缝金属......
and Technology of Welding and Joining, 2005, 10: 361-368. [9] ZAIN-UI-ABDEIN M, NELIAS D, JULLIEN J F, DELOISON D. Experimental investigation and finite element simulation of laser beam welding induced...Trans. Nonferrous Met. Soc. China 29(2019) 287-295 Effect of welding sequence on residual stress and deformation of 6061-T6 aluminium alloy automobile component Jie YI1,2,3, Jian-ming ZHANG1,3, Shu......
, and high cooling rate of the mushy zone lead to the reduction in micro-segregation. The melting efficiency of ytterbium fiber laser for welding of Hastelloy C-276 of 64% is higher than that (48... substructure that constituted for lower micro-segregation was formed at the weld centerline. Key words: Hastelloy C-276 alloy; laser welding; fiber laser; micro-segregation 1 Introduction Hastelloy......
Coarse WC Particles Ceramic-Metal Composite Coating by Laser Cladding曾晓雁,朱蓓蒂,陶曾毅,杨树国,崔昆摘 要:<正> The coarse WC particles ceramic-metal com-posite... in low carbon steel tube rod were cladded on20Ni4Mo steel by atomic hydrogen welding tech-nique and analysed by the same way,their resultsare compared.关键词:......
resistance of laser-welded NiTi alloy could be attributed to almost complete dissolution of inclusions upon laser welding. Key words: NiTi alloy; shape memory alloy; laser welding; electrochemical behavior...) was used as a reference. 2 Experimental Ti-50.6%Ni plate, hot-rolled at 900℃ with thickness of 1.0 mm was used in this study. A Nd-YAG laser was used to perform the laser welding. Full-penetration bead......
Laser Heat Treatment on Gear Surface and Its Practical Application DAI Zhong-sen1,SU Bao-rong1,MA Chun-yin1 (1.Guangzhou Photone Technology Co. LTD, P. R. China) 摘要:Making gears with hardened..., by study, experiment and practical use, that not only has the laser heat treatment solved the difficult problems in conventional technique, but also it has great superiority. The use cases proved......
