糖心产精国品免费入口*完整版糖心产精国品免费入口*完整版接头的糖心产精国品免费入口*完整版与力学性能
Microstructure and Mechanical Properties of 2024 Aluminium Alloy Joint by Electron Beam Welding
摘 要
采用电子束焊(EBW)对糖心产精国品免费入口*完整版进行焊接,研究了接头的糖心产精国品免费入口*完整版和力学性能.结果表明:接头焊缝糖心产精国品免费入口*完整版呈细小的等轴晶,主要由α-Al基体相及其上分布着的θ(CuAl2)和S(Al2CuMg)强化相组成,热影响区为粗大的枝晶;接头的抗拉强度达到母材的80%左右,热影响区是强度最薄弱的部位;焊缝的硬度低于母材和热影响区的,且热影响区存在一定的软化现象;其拉伸断口呈典型的韧窝状断口,韧窝尺寸较小且均匀.
糖心产精国品免费入口*完整版
糖心产精国品免费入口*完整版
力学性能
2024 aluminium alloy
糖心产精国品免费入口*完整版
糖心产精国品免费入口*完整版
mechanical property
Abstract
2024 aluminium alloy was welded by 糖心产精国品免费入口*完整版 (EBW).The 糖心产精国品免费入口*完整版 and mechanical properties of welded joints were investigated.The results show that the 糖心产精国品免费入口*完整版 of the weld zone was fine equiaxed grains,which mainly consisted of α-Al matrix phase and a few θ(CuAl2)and S(Al2CuMg)strengthening phases,while the heat-affected zone (HAZ)was composed of coarse dendrite.The tensile strength of the welded joint was about 80% of that of the base metal,and the HAZ was the weakest area of the joint.Microhardness of the weld metal was lower than that of both the base metal and HAZ,and a softening area existed in the HAZ.The joint tensile fracture present typical dimple fracture,while the dimples were fine and distributed uniformly.
中图分类号 TG444.7
所属栏目 新材料 新工艺
基金项目
收稿日期 2009/11/25
修改稿日期 2010/9/28
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备注糖心产精国品免费入口*完整版(1984-),男,吉林长春人,硕士研究生.
引用该论文: ZHANG Liang,WANG Shao-gang,MA Qi-hui,WU Xin-qiang. Microstructure and Mechanical Properties of 2024 Aluminium Alloy Joint by Electron Beam Welding[J]. Materials for mechancial engineering, 2010, 34(12): 48～50
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被引情况:
【1】 杨永和,李珞,徐震,陈旭, "X80管线钢疲劳裂纹的扩展行为",机械工程材料 39, 75-78(2015)
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参考文献
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【3】 AM G,VENTZKE V,DOS SANTOS J F,et al.Characterisation of electron beam welded aluminium alloys[J].Science and Technology of Welding and Joining,1999,4(5):317-323.
【4】 辜纯民,邓卫华,杨成刚,等.搅拌摩擦焊工艺参数对LY12铝合金接头组织和力学性能的影响[J].机械工程材料,2008,32(6):22-24.
【5】 李宝华,柯黎明,刑丽,等.搅拌摩擦焊工艺参数对LY12铝合金焊缝金属流动形态的影响[J].机械工程材料,2009,33(1):55-58.
【6】 许国良,程兆谷,夏金安,等.LF4、LF11、LF21、LY12铝合金的激光拼焊研究[J].应用激光,1999,19(5):285-288.
【7】 SQUILLACE A,DE FENZO A,GIORLEO G,et al.A comparison between FSW and TIG welding techniques:modifications of 糖心产精国品免费入口*完整版 and pitting corrosion resistance in AA2024-T3 butt joints[J].Journal of Materials Processing Technology,2004,152(1):97-105.
【8】 GENEVOIS C,DESCHAMPS A,VACHER P.Comparative study on local and global mechanical properties of 2024 T351,2024 T6 and 5251 O friction stir welds[J].Materials Science and Engineering A,2006,415(1/2):162-170.
【9】 ARNANCIO-FILHO S T,SHEIKHI S,DOS SANTOS J F,et al.Preliminary study on the 糖心产精国品免费入口*完整版 and mechanical properties of dissimilar friction stir welds in aircraft aluminium alloys 2024-T351 and 6056-T4[J].Journal of Materials Processing Technology,2008,206(1/3):132-142.
【10】 周振丰.焊接冶金学(金属焊接性)[M].北京:机械工业出版社,1996:132-133.
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