Mn18Cr18N

Mn18Cr18N化学成分

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Mn18Cr18N机械性能

Mn18Cr18N高氮奥氏体不锈钢由于其优良的力学性能和耐腐蚀性能, 是制造大型发电机护环的首选材料. 护环用钢采用冷变形方法强化, 其中600 MW护环室温屈服强度要求达到1200 MPa, 而1000 MW护环室温屈服强度要求达到1300 MPa以上. 

图1   压缩拉伸试样示意图

Fig.1   Schematic of specimen for compression-tensile test (unit: mm, ϕ—diameter, M—diameter of thread)

图2   Mn18Cr18N奥氏体不锈钢原始组织

Fig.2   Original microstructure of Mn18Cr18N austenite stainless steel

图3   Mn18Cr18N 奥氏体不锈钢压缩变形前后试样的XRD谱

Fig.3   XRD spectra of Mn18Cr18N austenite stainless steel specimens at 0 and 40% compression reduction

图4   Mn18Cr18N奥氏体不锈钢经不同压缩变形量后的压缩拉伸真应力-应变曲线

Fig.4   Compression-tensile true stress-strain curves of Mn18Cr18N austenite stainless steel under different compressive reductions

图5   Mn18Cr18N奥氏体不锈钢压缩拉伸的典型应变和应力值随压缩量的变化

Fig.5   Typical compression-tensile strain (a) and stress (b) variation with compression reductions of Mn18Cr18N austenite stainless steel

图6   Mn18Cr18N奥氏体不锈钢后续拉伸屈强比随压缩量的变化

Fig.6   Yield-strength ratio variation with compression reduction of Mn18Cr18N austenite stainless steel

图9   Mn18Cr18N奥氏体不锈钢经不同压缩变形量后拉伸至断裂的断口形貌SEM像

Fig.9   Fracture SEM images of Mn18Cr18N austenite stainless steel for compression-tensile test at the compression reductions of 0% (a), 15% (b), 25% (c), 30% (d), 35% (e) and 40% (f)

图10   Mn18Cr18N奥氏体不锈钢不同压缩量下微观组织的OM像

Fig.10   OM images of microstructures in Mn18Cr18N austenite stainless steel for compression reductions of 15% (a), 25% (b), 35% (c) and 40% (d)

图11   Mn18Cr18N奥氏体不锈钢断口纵截面组织的OM像

Fig.11   OM images of fracture microstructure (longitudinal section) of Mn18Cr18N austenite stainless steel for compression-tensile test at the compression reductions of 15% (a), 25% (b), 35% (c) and 40% (d)

图12   Mn18Cr18N-high-manganese-non-magnetic-hard-wearing-steel-61-7963" target="_self" title="Mn18Cr18N">Mn18Cr18N奥氏体不锈钢不同加载状态下的TEM像

Fig.12   TEM images of Mn18Cr18N austenite stainless steel under different deformation conditions(a) 15% compressive reduction (b) tensile to fracture after 15% compressive reduction(c) 35% compressive reduction (d) tensile to fracture after 35% compressive reduction

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Mn18Cr18N产品形态

• 热轧和冷拉棒材, 圆棒, 扁钢, 六角棒, 八角棒, 空心棒
• 带钢和钢卷, 热轧带钢, 热轧钢卷, 冷轧钢带, 冷轧钢卷
• 冷轧板材, 热轧板, 冷轧薄板, 中厚板, 高强钢板
• 热轧和冷拉异型钢, 凹凸字钢, 滑轨, 滑块
• 热轧和冷拉钢丝, 扁丝, 盘条, 直条
• 自由锻和模锻, 扁钢, 模块, 环, 桶, 饼, 阶梯轴及定制化
• 热挤压和冷轧无缝管, 异型管, 方管, 毛细管
• 电渣锭

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