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用Gleeblel500热应力应变模拟试验机等研究了钛镍扩散焊时温度、压力和时间对焊着率和扩散层厚度的影响,以及扩散层的成分、组织和显微硬度的分布。结果表明,采用850℃,5MPa、5min的扩散焊规范可以稳定地获得100%的焊着率,扩散层厚度也不太大。为了大幅度减小扩散层厚度,进行了热压焊焊着率与变形量之间的关系研究,结果表明,当变形量超过60%时,可得到100%的焊着率。用镍作过渡层,采用热轧法制造钛钢复合板是可行的,比用铁或不锈钢作过渡层优越得多。
Using Gleeblel500 thermal stress and strain simulation test machine, the effects of temperature, pressure and time on the welding rate and diffusion layer thickness, and the composition, microstructure and microhardness of the diffusion layer were studied. The results show that the welding parameters of 850 ℃, 5MPa and 5min can be 100% stable, and the diffusion layer thickness is not too large. In order to reduce the thickness of the diffusion layer drastically, the relationship between the hot-press welding rate and the deformation is studied. The results show that when the deformation exceeds 60%, the welding rate of 100% can be obtained. The use of nickel as a transition layer, the use of hot-rolled titanium composite plate manufacturing is feasible, than with iron or stainless steel transition layer is much better.