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of weld metal microstructure on heat input and filler wires were determined by dilution calculation, Creq/Nieq ratio, stacking fault energy (SFE), optical microscopy (OM) and transmission electron microscopy (TEM). It was observed that the microstructure as well as impact property of weld metal was significantly affected by the heat input and filler wire. Weld metals prepared by high heat input......
挤压力最小,该比值超过0.82时挤压力明显增加. 关键词:分流模挤压;有限元模拟;分流孔面积;金属流动行为 中图分类号:TG379 文献标识码:A Metal flowing behaviors during diplopore extrusion of square tube with porthole die HUANG.... The effects of the portholes configuration scheme on the metal flowing behaviors, extrusion load, tube temperature and forming quality were analyzed. The results show that, the area ratio of the center......
precipitates dissolve into the aluminium matrix and complete dissolution of the precipitates can not take place in weld metal and overaging appear in HAZ and meanwhile solute segregation and grain..., superior microstructures and preferable residual stress field in the weld metal region. From the literature review, it is understood that most of the published researches have focused on the effect......
MICROSTRUCTURES AND OXIDATION RESISTANCE OF Fe3Al WELD OVERLAY J.R.Sun1,Y.S.Sun1,X.G.Min1,X.Q.Yu1 (1.Department of Materials Science and Engineering,Southeast University,Nanjing 210096,China) Abstract:Using the Fe3Al electrode through manual arc surfacing (MAS),Fe3Al coatings havebeen deposited on the stainless steel substrate.The microstructures,hardness andoxidation resistance of the weld......
alloy dissimilar metal; laser-adhesive hybrid bonding; weld appearance; corrosion resistance properties 随着现代交通运输工具轻量化战略的实施,钢/铝复合结构件发挥两种材料性能优势,减轻质量,在汽车,高速列车,船舶等行业有良好应用前景,然而异种金属的优质高效连接是制约钢/铝复合结构件在工程中推广应用的... of adhesive layer on the corrosion resistance of weld joint was also discussed. The results indicate that addition of adhesive can improve the block of heat transfer caused by the interstice of overlap welding......
) and ferrite(sub-critical HAZ). Lower hardness in intercritically HAZ and sub-critical HAZ(softening zones) was observed compared to base metal(BM) in dissimilar/similar weld joints. The size of softening zone...Microstructure and properties in dissimilar/similar weld joints between DP780 and DP980 steels processed by fiber laser weldingHongshuang Di1,Qian Sun1,Xiaonan Wang2,Jianping Li11. State Key......
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Three-dimensional simulation of sintering crunodes of metal powders or fibers by level set methodCHEN Dong-dong(谌东东)1, ZHENG Zhou-shun(郑洲顺)1, WANG Jian-zhong(王建忠)2, TANG Hui-ping(汤慧萍)2, QU Xuan-hui(曲选辉)3(1. School of Mathematics and Statistics, Central South University, Changsha 410083, China;2. State Key Laboratory of Porous Metal Materials (Northwest Institute for Nonferrous Metal Research),Xi......
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and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China摘 要:Accelerated corrosion test of stainless steel with weld...Pitting and galvanic corrosion behavior of stainless steel with weld in wet-dry environment containing Cl-Cui Lin1,2), Xiaogang Li2,3), and Chaofang Dong2) 1) School of Material Science......