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Effect of Post Weld Heat Treatment on Microstructure and Fracture Toughness of Friction Welded Joint吴素君,HAN Bo,ZHAO Dalong,JI Yingping,SHAO LingSchool of Materials Science and Engineering,Beihang University摘 要:The effect of post weld heat treatment on the microstructure and fracture toughness of friction welded joints of Ti-6.5Al-1Mo-1V-2Zr alloy......
Twinning in weld HAZ of ZK21 commercial magnesium alloy LIU Jun-wei(刘俊伟), CHEN Ding(陈 鼎), CHEN Zhen-hua(陈振华) College of Materials Science and Engineering, Hunan University, Changsha 410082, China...; Abstract: The microstructure and properties of Mg ZK21 laser beam weld without filler were researched using optical microscopy (OM), electron microscopy and mechanical test......
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, the relationship between keyhole depth and weld penetration is also discussed. This paper can help to better understand the dynamics in molten pool and then improve laser welding process. Key words: laser welding; keyhole evolution; weld pool dynamics; free surface tracking; weld penetration Cite this article as: LIU Jiang-wei, ZENG Ping-wang, RAO Zheng-hua, ZHANG Tian-li. Transport phenomena and keyhole......
海外Weld Range大型露天铁矿内部排土黄土龙1,2,3,章林1,2,31. 中钢集团马鞍山矿山研究院有限公司2. 金属矿山安全与健康国家重点实验室3. 华唯金属矿产资源高效循环利用国家工程研究中心有限公司摘 要:排岩工作是露天开采中重要的生产环节,露天排岩成本在生产成本中比重巨大,其中露天矿内部排岩被认为是最为经济的排岩方案.根据Weld Range铁矿Madoonga矿区矿体赋存情况,对比内部排土对采空区空间要求,发现Madoonga矿区长宽比大,沿走向长度长,适合分期分区开采,具备内部排土的可行性.调整开采顺序能够改变内部排土规模,对Madoonga矿区3个区段不同开采顺序形成的3个方案进行对比研究,发现方案三将规模最小的西区作为首采区,较为合理.通过研究方案三的生产进度计划对方案三进行优化......
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Effect of YF3 on weld microstructure and performance of titanium alloy TC4 in TIG weldingYANG Chun-li(杨春利), LIN San-bao(林三宝), ZHANG Qing-tao(张清涛)(State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology, Harbin 150001, China)Abstract:The effect of additive YF3 on weld microstructure and mechanical performance of titanium alloy TC4 in Activating Tungsten Inert......
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Numerical simulation on the shape of liquid surface of TIG full-penetrated weld poolHE Jingshan,LIU Wei,ZHANG Binggang,WU Qingsheng,and FENG Jicai State Key Laboratory of Advanced Welding Production... weld pool,the three-dimensional shape models of weld pool with different values of the back fusion zone radius RB were obtained.The effects of arc on the penetrated weld pool were studied by numerical......
Weld Shape Variation and Electrode Oxidation Behavior under Ar-(Ar-CO2) Double Shielded GTA WeldingHidetoshi Fujii,Kiyoshi NogiJoining and welding Research Institute, Osaka University摘 要:weld shape variation......
