| Ni-Ti 钎料高温钎焊TZM晶间渗入行为研究 |
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| 引用本文： | 路全彬,钟素娟,李胜男,程占,龙伟民.Ni-Ti 钎料高温钎焊TZM晶间渗入行为研究[J].稀有金属材料与工程,2019,48(8):2418-2423. |
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| 作者姓名： | 路全彬 钟素娟 李胜男 程占 龙伟民 |
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| 作者单位： | 郑州机械研究所有限公司 新型钎焊材料与技术国家重点实验室,郑州机械研究所有限公司 新型钎焊材料与技术国家重点实验室,郑州机械研究所有限公司 新型钎焊材料与技术国家重点实验室,郑州机械研究所有限公司 新型钎焊材料与技术国家重点实验室,郑州机械研究所有限公司 新型钎焊材料与技术国家重点实验室 |
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| 基金项目： | 国家国际科技合作专项项目 |
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| 摘 要： | 采用SEM,EDS,XRD和力学试验机等分析测试方法,研究了Ni-Ti钎料对TZM合金钎缝组织和性能的影响。结果表明：Ni-Ti钎料可实现TZM的高温真空钎焊连接。Ni-13.7Ti/TZM界面区,母材中的Mo与钎料中的Ni形成MoNi相,是钎料与TZM形成冶金结合的主要原因。TZM/Ni-44Ti/TZM界面区Ni-44Ti钎料中的Ti与Mo反应,Mo-Ti固溶体,使钎料和TZM形成冶金结合。Ni-44Ti钎料钎焊TZM合金产生严重晶间渗入现象。降低钎料中Ti的含量,晶间渗入和母材溶蚀现象大幅减弱；TZM/Ni-13.7Ti/TZM钎焊接头剪切强度193MPa,TZM/Ni-44Ti/TZM钎焊接头剪切强度167MPa,晶间渗入使钎缝强度降低,降低钎料中的Ti含量,钎焊接头强度提高。
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| 关 键 词： | TZM合金 钎焊 晶间渗入 力学性能 |
| 收稿时间： | 2018/4/8 0:00:00 |
| 修稿时间： | 2019/6/12 0:00:00 |
Inter-granular infiltration of TZM alloy joints brazed using Ni-Ti brazing alloy with high temperature |
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| Lu Quanbin,Zhong Sujuan,Li Shengnan,Cheng Zhan and Long Weimin.Inter-granular infiltration of TZM alloy joints brazed using Ni-Ti brazing alloy with high temperature[J].Rare Metal Materials and Engineering,2019,48(8):2418-2423. |
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| Authors: | Lu Quanbin Zhong Sujuan Li Shengnan Cheng Zhan and Long Weimin |
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| Affiliation: | State Key Laboratory of Advanced Brazing Filler Metals Technology,Zhengzhou Research Institute of Mechanical Engineering Co,LTD,State Key Laboratory of Advanced Brazing Filler Metals Technology,Zhengzhou Research Institute of Mechanical Engineering Co,LTD,State Key Laboratory of Advanced Brazing Filler Metals Technology,Zhengzhou Research Institute of Mechanical Engineering Co,LTD,State Key Laboratory of Advanced Brazing Filler Metals Technology,Zhengzhou Research Institute of Mechanical Engineering Co,LTD,State Key Laboratory of Advanced Brazing Filler Metals Technology,Zhengzhou Research Institute of Mechanical Engineering Co,LTD |
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| Abstract: | The interfacial microstructure and joining properties of Titanium-Zirconium-Molybdenum (TZM) alloy joints were characterized by SEM, EDS, XRD and mechanical tests, etc. The results showed that the Ni-Ti brazing filler metal can efficiently realize high-temperature vacuum brazing of TZM. The formation MoNi4 phase from Mo of the base metal and Ni in the braze metal was the main reason for the metallurgical bond between the TZM and the Ni-13.7Ti / TZM interface region. Ti in Ni-44Ti braze metal dissolved in Mo to form an infinite solid solution in TZM / Ni-44Ti / TZM interface zone, forming a metallurgical bond between the braze metal and TZM. However, a serious inter-granular infiltration phenomenon was observed when Ni-44Ti braze alloy was used to braze TZM alloy. The degree of inter-granular infiltration and corrosion of the base material significantly reduced with a decrease of Ti content in the braze alloy. The average shear strength of TZM / Ni-13.7Ti / TZM brazed joints reached 193 MPa, while the average shear strength of TZM/Ni-44Ti/TZM brazed joints reached 167 MPa. The lower shear strength of TZM/Ni-44Ti/TZM was attributed to the inter-granular infiltration due to the higher content of Ti in the brazing filler. |
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| Keywords: | TZM alloy brazing inter-granular infiltration mechanical properties |
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