利用电子探针、X-射线和Therm-Calc软件计算等方法研究了Si、Mn、Nb、V、Al、C等合金元素在高强TRIP钢各组织中的分布规律。研究结果表明：Si、V、Al等元素在铁素体中的固溶量大于在贝氏体中的固溶量，Mn、Nb在贝氏体中的固溶量大于在铁素体中的固溶量；Nb、Al等具有强碳氮亲和力的元素在测定区域内分布不均匀；铁素体中的碳呈平衡态分布；贝氏体铁素体中的碳呈过饱和态分布，碳元素主要分布于奥氏体中，固溶碳大约占TRIP钢中碳含量的70%。
Distribution regularities of chemical elements in the microstructures of high strength TRIP steel, such as Si, Mn, Nb, V, Al, C, were investigated by the methods of electron probe, Therm-Calc and X-ray. The results show that the solubility of Si, V and Al in ferrite is higher than in bainite, and the solubility of Mn and Nb in banite is higher than in ferrite. Nb and Al with high C and N appetency distribute unevenly in monitoring zone. Carbon content of ferrite is approaching to equilibrium state. Carbon content of bainite is dissolving in over-saturation state. Carbon mainly dissolve in austenite, total carbon content in austenite is of 70% in TRIP steels.
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