Effects of Weaving Laser on Weld Microstructure and Crack for Al 6k21-T4 Alloy

查看全文 作　　者：[1]B.H.Kim;[1]N.H.Kang;[2]W.T.Oh;[3]C.H.Kim;[3]J.H.Kim;[4]Y.S.Kim;[1]Y.H.Park

机构地区：[1]Department of Materials Science and Engineering,Pusan National University,San30,Jangjeon-dong,Geumjeong-gu,Busan 609-735,Korea;[2]Department of Materials and Components Engineering,Dong-Eui University,Busan 614-714,Korea;[3]Advanced Joining Technology Team,KITECH,7-47,Songdo-dong,Yeonsu-gu,Incheon 406-840,Korea;[4]Division for Dongnam Area Technology Service,KITECH,Jisa-dong,Ganseo-gu,Busan 618-230,Korea

出　　处：《Journal of Materials Science & Technology》索引2011年第27卷第1期,共4页

基　　金：supported by a grant from the Ministry of Knowledge Economy,Republic of Korea;by NCRC (National Core Research Center) Program through the National Research Foundation of Korea funded by the Ministry of Education,Science and Technology (2010-0001-222) 摘　　要：For Al 6k21-T4 overlap weld joint,the shear-tensile strength by using the weaving laser was improved as compared to the case of linear laser.For the specimen of low strength,the porosity was distributed continuously along the intersection between the plates and fusion line.However,for the optimized welding condition,large oval-shaped porosities were located only in the advancing track of the concave part.Therefore,the continuity of cracks and porosities played a key role to determine the strength.And,the weaving width was also the important parameter to control the strength.Furthermore,the concave part had more significant hot and cold cracking in the weld and heat-affected zone(HAZ),respectively,than the convex part. 关键词：焊缝裂纹微观结构激光甲状腺素织造合金铝焊接接头

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Effects of Weaving Laser on Weld Microstructure and Crack for Al 6k21-T4 Alloy

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