| TiAl合金与高温合金的扩散焊接头组织及性能 |
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| 引用本文： | 周媛,熊华平,毛唯,陈波,叶雷. TiAl合金与高温合金的扩散焊接头组织及性能[J]. 材料工程, 2012, 8(8): 88-91,100. DOI: 10.3969/j.issn.1001-4381.2012.08.019 |
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| 作者姓名： | 周媛 熊华平 毛唯 陈波 叶雷 |
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| 作者单位： | 1.北京航空材料研究院焊接及锻压工艺研究室,北京,100095;2.北京航空材料研究院焊接及锻压工艺研究室,北京,100095;3.北京航空材料研究院焊接及锻压工艺研究室,北京,100095;4.北京航空材料研究院焊接及锻压工艺研究室,北京,100095;5.北京航空材料研究院焊接及锻压工艺研究室,北京,100095 |
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| 摘 要： | 采用直接扩散焊和加中间层的扩散焊方法进行了TiAl合金和高温合金异种材料组合的连接实验.在1000℃/20MPa/1h规范下直接扩散焊获得的TiAl/GH2036接头组织中存在大量未焊合的孔洞,接头室温剪切强度平均值仅有16MPa.采用Ti-Zr-Cu-Ni合金作为中间层在935℃加压3MPa保温10min和1h进行了TiAl/GH3536组合接头的液相扩散焊,获得的扩散焊缝中含有Ti3Al,NiTi等多种物相,中间层合金与两侧母材发生作用形成了具有一定厚度的反应层.在935℃/3MPa/1h规范下获得了与两侧母材结合良好的无缺陷扩散焊接头,室温剪切强度达到125MPa.
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| 关 键 词： | TiAl合金 高温合金 扩散焊 Ti-Zr-Cu-Ni合金 |
Microstructures and Property of Diffusion Bonded Joints Between TiAl Alloy and Two Kinds of Superalloys |
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| ZHOU Yuan , XIONG Hua-ping , MAO Wei , CHEN Bo , YE Lei. Microstructures and Property of Diffusion Bonded Joints Between TiAl Alloy and Two Kinds of Superalloys[J]. Journal of Materials Engineering, 2012, 8(8): 88-91,100. DOI: 10.3969/j.issn.1001-4381.2012.08.019 |
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| Authors: | ZHOU Yuan XIONG Hua-ping MAO Wei CHEN Bo YE Lei |
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| Affiliation: | (Laboratory of Welding and Forging,Beijing Institute of Aeronautical Materials,Beijing 100095,China) |
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| Abstract: | Joining TiAl alloy and superalloy was carried out by diffusion bonding with and without interlayer.There existed many holes in the TiAl/GH2036 joint under the diffusion bonding condition of 1000℃/20MPa/1h,and the average shear strength of joint at room temperature was only 16MPa.Using Ti-Zr-Cu-Ni alloy as the interlayer,liquid-phase diffusion bonding between TiAl and GH3536 was investigated at 935℃ holding 10min and 1h under the pressure of 3MPa.The joints diffusion boned under the two conditions were composed by multiple phases,such as Ti3Al and NiTi.As a result of the reaction between the interlayer and two base metals,two reaction layers with a certain thickness appeared in the both interface respectively.Sound joint was obtained under the diffusion bonding condition of 935℃/3MPa/1h,and the interlayer alloy exhibited strong cohesion with TiAl and GH3536.The corresponding shear strength of joint reached 125MPa. |
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| Keywords: | TiAl alloy superalloy diffusion bonding Ti-Zr-Cu-Ni alloy |
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