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Ta1与0Cr18Ni9薄板的储能焊试验

杨全虎, 翟秋亚, 徐锦锋, 纪腾飞, 叶建林

杨全虎, 翟秋亚, 徐锦锋, 纪腾飞, 叶建林. Ta1与0Cr18Ni9薄板的储能焊试验[J]. 焊接学报, 2019, 40(9): 116-121. DOI: 10.12073/j.hjxb.2019400246
引用本文: 杨全虎, 翟秋亚, 徐锦锋, 纪腾飞, 叶建林. Ta1与0Cr18Ni9薄板的储能焊试验[J]. 焊接学报, 2019, 40(9): 116-121. DOI: 10.12073/j.hjxb.2019400246
shu
YANG Quanhu, ZHAI Qiuya, XU Jingfeng, JI Tengfei, YE Jianlin. Capacitor discharge welding of Ta1 and 0Cr18Ni9 thin plates[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(9): 116-121. DOI: 10.12073/j.hjxb.2019400246
Citation: YANG Quanhu, ZHAI Qiuya, XU Jingfeng, JI Tengfei, YE Jianlin. Capacitor discharge welding of Ta1 and 0Cr18Ni9 thin plates[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(9): 116-121. DOI: 10.12073/j.hjxb.2019400246
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Ta1与0Cr18Ni9薄板的储能焊试验

  • 1.

    西安理工大学, 西安 710048

  • 2.

    西安优耐特容器制造有限公司, 西安 710201

基金项目: 陕西省自然科学基金重点资助项目（2018JZ5016）；西安市高校院所人才服务企业工程计划资助项目（GR17068）

Capacitor discharge welding of Ta1 and 0Cr18Ni9 thin plates

  • 1.

    Xi'an University of Technology, Xi'an 710048, China

  • 2.

    Xi'an United Pressure Vessel Co., Ltd., Xi'an 710201, China

摘要

    摘要
  • 摘要: 采用电容储能焊方法对Ta1与0Cr18Ni9薄板进行点焊连接，分析了直接点焊与添加高熵中间层的钽/钢接头组织与性能. 结果表明，溶质截流效应可有效抑制快速凝固熔核中脆性金属间化合物产生，实现钽/钢的储能焊接. Ta1/0Cr18Ni9的直接点焊接头中熔化区集中于钢板一侧，呈双曲回转形，熔核中心出现一直径约0.2 mm近圆形气孔，在钽与钢的结合界面处有少量Fe5Ta3与Cr2Ta金属间化合物产生；添加高熵合金中间层的点焊接头，由比较规则的近半扁球状熔核及熔核向基体过渡的熔合区组成，熔核具有简单固溶体结构，组织均匀致密，主要由柱状晶组成. 在相同的参数条件下，钽/钢直接焊接头接头抗剪强度为239 MPa，添加高熵合金中间层的钽/钢接头抗剪强度可达374 MPa.
    Abstract: Capacitor discharge spot welding with rapid solidification characteristics of Ta1 and 0Cr18Ni9 thin plates were carried in present paper. The microstructure and properties of the welding joints between by direct CDW and adding Fe5Co24Ni27Cu25Cr19 interlayer alloy were analysed and discussed. The results show that the solute trapping can effectively inhibit brittle intermetallic compounds to realize welding tantalum and steel welding. The welding joints of the direct CDW possess hyperbolical and gyro shaped and the melting zone is located in one side of the 0Cr18Ni9 plate. Nuggets appear about 0.2 mm subcircular porosity in diameter, and Fe5Ta3 and Cr2Ta intermetallic compounds are produced at the interface between tantalum and steel. The welding joint added high entropy interlayer alloy is composed of cap-shaped nugget and fusion area of the transition base metal. Furthermore, the nugget have simple solid solution structure and fine microstructure which consisted of columnar crystals. Under the same condition, shear strength of the joint is 239 MPa by direct spot welding of Ta1 and 0Cr18Ni9 and the higher shear strength of Ta1/0Cr18Ni9 spot welding joint by CDW reached 374 MPa.
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  • 收稿日期:  2018-01-03

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