Ti-Zr-Cu-Ni-Fe-Co-Mo钎料合金钎焊γ-TiAl/GH536接头的显微组织与剪切强度（英文）
发布时间：2021-04-22 01:53
采用Ti-Zr-Cu-Ni-Fe-Co-Mo作为钎料,在钎焊温度1090～1170℃、钎焊时间0～20 min的工艺参数下,实现γ-TiAl和GH536合金的钎焊连接,利用SEM、EDS、XRD和万能试验机研究钎焊温度和钎焊时间对钎焊接头显微组织和剪切强度的影响。结果表明:不同工艺参数下获得的γ-TiAl/GH536钎焊接头均包括4个界面反应层。随着钎焊温度的升高和钎焊时间的延长,钎缝宽度和钎焊接头的平均抗剪强度均是先增大后减小。钎焊温度1150℃、钎焊时间10 min时获得的钎焊接头的剪切强度最大,达262 MPa。Al3NiTi2和TiNi3脆性金属间化合物是产生裂纹和降低接头强度的主控因素,Al3NiTi2脆性金属间化合物几乎占据整个呈典型解理断裂特征的剪切断口表面。
【文章来源】：Transactions of Nonferrous Metals Society of China. 2020,30(08)EISCICSCD
【文章页数】：13 页
【文章目录】：
1 Introduction
2 Experimental
3 Results and discussion
3.1 Microstructure of Ti-Zr-Cu-Ni-Fe-Co-Mo filler alloy
3.2 Typical interfacial microstructure ofγ-TiAl/GH536 brazed joint
3.3 Effects of brazing temperature and brazing time on microstructure ofγ-TiAl/GH536 brazed joints
3.4 Shear strength and fracture mechanism ofγ-TiAl/GH536 brazed joints
4 Conclusions
本文编号：3152923
【文章来源】：Transactions of Nonferrous Metals Society of China. 2020,30(08)EISCICSCD
【文章页数】：13 页
【文章目录】：
1 Introduction
2 Experimental
3 Results and discussion
3.1 Microstructure of Ti-Zr-Cu-Ni-Fe-Co-Mo filler alloy
3.2 Typical interfacial microstructure ofγ-TiAl/GH536 brazed joint
3.3 Effects of brazing temperature and brazing time on microstructure ofγ-TiAl/GH536 brazed joints
3.4 Shear strength and fracture mechanism ofγ-TiAl/GH536 brazed joints
4 Conclusions
本文编号：3152923
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