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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of 0.2 and 0.5% Ti on the microstructure and mechanical properties of 13Cr supermartensitic stainless steel
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Effect of 0.2 and 0.5% Ti on the microstructure and mechanical properties of 13Cr supermartensitic stainless steel

机译：0.2％和0.5％Ti对13Cr超马氏体不锈钢组织和力学性能的影响

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摘要

The effect that a 0, 0.2, and 0.5 wt.% titanium content has on the microstructure and mechanical properties of 13Cr supermartensitic stainless steel was investigated using an optical microscope, transmission electron microscope, and X-ray diffraction. The resultant microstructures of the three steels were tempered martensite with a reversed austenite dispersed throughout the matrix. Additionally, the formation of Cr-rich carbides was suppressed by stable Ti(C,N), which improved the strength without severely decreasing in the Ti-microalloyed steel toughness. Nano-precipitation of Ni3Ti was found for the 0.5 wt.% Ti steel during tempering, which significantly increased the strength, but decreased the toughness. The reversed austenite volume fraction also significantly influenced the mechanical properties.
机译：使用光学显微镜，透射电子显微镜和X射线衍射研究了0、0.2和0.5重量％的钛含量对13Cr超马氏体不锈钢的组织和力学性能的影响。三种钢的最终显微组织是回火马氏体，反向奥氏体分散在整个基体中。此外，稳定的Ti（C，N）抑制了富Cr碳化物的形成，从而提高了强度，而不会显着降低Ti微合金钢的韧性。发现0.5％（重量）的Ti钢在回火过程中会发生Ni3Ti的纳米沉淀，这会显着提高强度，但降低韧性。反向奥氏体体积分数也显着影响机械性能。

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