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, AI, C, were investigated by the methods of electron probe, Therrn-Calc and X ray. The results show that the solubility of Si, V and A1 in ferrite is higher than in bainite, and the solubility of Mn and Nb in ban- ite is higher than in ferrite. Nb and A1 with high C and N appetency distribute unevenly in monitoring zone. Car- bon 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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