| 电弧超声对SiC_p/6061Al复合材料等离子弧焊缝组织与接头性能的改善作用 |
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| 引用本文： | 雷玉成,王志伟,冯波,蒋海浪.电弧超声对SiC_p/6061Al复合材料等离子弧焊缝组织与接头性能的改善作用[J].机械工程材料,2009(12). |
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| 作者姓名： | 雷玉成 王志伟 冯波 蒋海浪 |
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| 作者单位： | 江苏大学材料科学与工程学院; |
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| 基金项目： | 现代焊接生产技术国家重点实验室基金资助项目(09003) |
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| 摘 要： | 通过高频调制等离子电弧激发出电弧超声,以Ti-6061Al合金片作为填充材料对SiC_p/6061Al复合材料进行等离子弧(PAW)原位合金化焊接,并与常规PAW进行对比,研究了电弧超声对焊缝组织和性能的影响。结果表明:与常规PAW相比,电弧超声使焊缝组织明显细化,TiN、TiC等颗粒分布更加弥散,且无气孔、裂纹等缺陷,焊缝中没有发现脆性相Al_4C_3的生成;电弧超声使焊缝中心区硬度有一定程度下降;焊接接头抗拉强度提高到252 MPa,比常规PAW焊接接头的提高了约7%;同时拉伸断口韧窝数量明显增加,呈现出明显的韧性断裂特征。
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| 关 键 词： | 电弧超声 SiC_p/6061A1复合材料 等离子弧焊接 显微组织 |
Improving Effect of Arc-Ultrasonic on Microstructure and Properties of Weld in Plasma Arc Welding of SiC_p/6061Al Composite |
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| LEI Yu-cheng,WANG Zhi-wei,FENG bo,JIANG Hai-lang.Improving Effect of Arc-Ultrasonic on Microstructure and Properties of Weld in Plasma Arc Welding of SiC_p/6061Al Composite[J].Materials For Mechanical Engineering,2009(12). |
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| Authors: | LEI Yu-cheng WANG Zhi-wei FENG bo JIANG Hai-lang |
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| Affiliation: | LEI Yu-cheng,WANG Zhi-wei,FENG bo,JIANG Hai-lang (School of Material Science and Engineering,Jiangsu University,Zhenjiang 212013,China) |
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| Abstract: | The arc-ultrasonic could be excited by modulating the plasma are through high frequency.Adding Ti-6061Al as filling material,the effect of arc-ultrasonic on microstructure and mechanical properties of joint of SiC_p/6061Al composite in plasma arc in-situ alloying welding(PAW) was studied.And then it was compared with conventional PAW.The results show that to compared with conventional PAW,arc-ultrasonic could significantly refine the joint microstuetrue.TiN and TiC particles distributed more dispersively,an... |
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| Keywords: | arc-ultrasonic SiC_p/6061Al composite plasma arc welding microstructure |
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