材料科学
接头(建筑物)
焊接
冶金
钛合金
摩擦焊接
复合材料
结构工程
合金
工程类
作者
Guodong Wen,T J,Wenya Li,X. Li,Jinguang Li,Tao Chen,Rachel Ng Jing Wen,J. Niu,Hong Zhen Guo
标识
DOI:10.25103/jestr.053.07
摘要
The linear friction welding (LFW) of dissimilar titanium alloys and Ti-5Al-2Sn-2Zr-4Mo-4Cr (Ti17) was studied.Combined with experimentally recorded temperature of the specimen, the thermal history of the joint during LFW was calculated based on the equation of heat conduction.The calculated temperatures are comparable to those in experiment indicating that the proposed mathematic calculation method is appropriate to use for LFW.The highest temperature of the interface was about 1280oC and the time spent above the b transus temperature being about 4.5s in Ti17 side and 3.8s in Ti11 side, respectively.The highest temperatures of the TMAZs in Ti17 and Ti11 sides are about 1100°C and 1110°C, respectively.The cooling rate is about 250°C/s and 400°C/s in the interface and TMAZs.Fine equiaxed grains are present in the WZ, and numerous elongated grains are present in the TMAZs in both sides except a small number of fine recrystallized grains.
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