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首页> 外文会议>International conference on materials science and nanotechnology >Effects of Cold Deformation on Precipitation in Fe-18Cr-12Mn-0.48N High-Nitrogen Austenitic Stainless Steel
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Effects of Cold Deformation on Precipitation in Fe-18Cr-12Mn-0.48N High-Nitrogen Austenitic Stainless Steel

机译：冷变形对Fe-18Cr-12Mn-0.48N高氮奥氏体不锈钢沉淀的影响

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摘要

The precipitation behaviors were investigated during isothermally aging at 700°C and 800°C after cold compressed by 30% in thickness in Fe-18Cr-12Mn-0.48N high-nitrogen austenitic stainless steel by using optical microscopy (OM), laser scanning confocal microscopy (LSCM) and transmission electron microscopy (TEM). The results show that precipitation morphology in cold-deformed sample is the same as non-cold-deformed sample, which also displays discontinuous cellular way. Cold deformation accelerates the precipitation of M_2N phase. The precipitation occurs at not only grain boundaries but also twin grain boundaries in the experimental steel. In cold-deformed sample, besides the long-strip M_2N precipitates, intermetallic phase-σ phase owning bct structure and lattice parameters of a=0.8800nm and c=0.4544nm were observed along grain boundaries and inside the grain.
机译：通过使用光学显微镜（OM），在Fe-18Cr-12mN-0.48N高氮奥氏体不锈钢中的冷压缩后在700℃和800℃下在700℃和800℃下进行沉淀行为。通过光学显微镜（OM），激光扫描共焦显微镜（LSCM）和透射电子显微镜（TEM）。结果表明，冷变形样品中的降水形态与非冷变形样品相同，其也显示出不连续的细胞方式。冷变形加速M_2N相的沉淀。沉淀不仅发生在实验钢中的晶界，而且发生了双晶界。在冷变形样品中，除了长条带M_2N沉淀物之外，沿晶界和晶粒内部观察到金属间相位-Σ相位= 0.8800nm和C = 0.4544mm。

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