| BNi2+TiH2复合钎料钎焊C/C复合材料与GH99镍基高温合金 |
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| 引用本文： | 田晓羽,亓钧雷,张丽霞,梁迎春,李宏伟,冯吉才. BNi2+TiH2复合钎料钎焊C/C复合材料与GH99镍基高温合金[J]. 焊接学报, 2014, 35(5): 35-38 |
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| 作者姓名： | 田晓羽 亓钧雷 张丽霞 梁迎春 李宏伟 冯吉才 |
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| 作者单位： | 1.哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001 |
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| 基金项目： | 国家自然科学基金面上资助项目(51105108,E050803);中央高校基本科研业务费专项资金资助项目(HIT.NSRIF.2010113,2010115);哈尔滨市科技创新人才研究专项基金资助项目(2010RFLXG005) |
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| 摘 要： | 采用BNi2+TiH2复合粉末钎料成功实现C/C复合材料与GH99镍基高温合金的钎焊,对焊后接头界面组织及力学性能进行了分析.结果表明,焊后接头典型界面结构为C/C复合材料/Cr3C2+MC+Ni(s,s)/MC+Ni(s,s)/Ni3Si+Ni(s,s)/Cr3C2+MC+Ni(s,s)/GH99高温合金.钎料中加入TiH2,可促进C/C复合材料母材的溶解,并在钎缝中部形成MC碳化物颗粒.随着TiH2含量的增加,钎缝中部MC形态由细小弥散向大片状转变.当TiH2含量为3%时,接头室温及800,1000℃高温抗剪强度最高,分别可达40,19及10 MPa,接头强度高于BNi2钎料钎焊接头强度,并可有效保证接头高温使用性能.
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| 关 键 词： | C/C复合材料 GH99 BNi2+TiH2钎料 界面组织 抗剪强度 |
| 收稿时间： | 2013-12-26 |
Brazing of C/C composite and GH99 superalloy Using BNi2+TiH2 composite filler powder |
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| TIAN Xiaoyu,QI Junlei,ZHANG Lixi,LIANG Yingchun,LI Hongwei and FENG Jicai. Brazing of C/C composite and GH99 superalloy Using BNi2+TiH2 composite filler powder[J]. Transactions of The China Welding Institution, 2014, 35(5): 35-38 |
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| Authors: | TIAN Xiaoyu QI Junlei ZHANG Lixi LIANG Yingchun LI Hongwei FENG Jicai |
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| Affiliation: | 1.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China2.School of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001, China3.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;Shandong Provincial Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China |
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| Abstract: | The brazing of C/C composite and GH99 nickel base superalloy was successfully performed using BNi2+TiH2 brazing powder. The interfacial microstructure and mechanical properties of the brazed joints were investigated. The results show that,the typical microstructure of the joint is:C/C composite/Cr3C2+MC+Ni(s,s)/MC+Ni(s,s)/Ni3Si+Ni(s,s)/Cr3C2+MC+Ni(s,s)/GH99. With the increasing of content of TiH2,the dissolution of C/C substrate was enhanced,dispersed MC carbide particles formed in braze seam,and the modulus mismatch between C/C and filler alloy,the mechanical properties of the brazed joints were improved consequently. When using braze powder with 3% TiH2 addition, the maximum shear strength of the brazed joints were obtained,which were 40 MPa at room temperature,19 MPa at 800℃ and 10 MPa at 1 000℃. Comparing with brazed joints using BNi2 filler alloy,BNi2+TiH2 joints possess higher strength,and the high-temperature properties of the joints can be guaranteed. |
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| Keywords: | C/C composite GH99 superalloy BNi2+TiH2 braze powder interfacial microstructure mechanical properties |
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