Mn18Cr18N化學(xué)成分

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Mn18Cr18N機械性能

Mn18Cr18N高氮奧氏體不銹鋼由于其優(yōu)良的力學(xué)性能和耐腐蝕性能, 是制造大型發(fā)電機護環(huán)的首選材料. 護環(huán)用鋼采用冷變形方法強化, 其中600 MW護環(huán)室溫屈服強度要求達到1200 MPa, 而1000 MW護環(huán)室溫屈服強度要求達到1300 MPa以上. 

圖1   壓縮拉伸試樣示意圖

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

圖2   Mn18Cr18N奧氏體不銹鋼原始組織

Fig.2   Original microstructure of Mn18Cr18N austenite stainless steel

圖3   Mn18Cr18N 奧氏體不銹鋼壓縮變形前后試樣的XRD譜

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

圖4   Mn18Cr18N奧氏體不銹鋼經(jīng)不同壓縮變形量后的壓縮拉伸真應(yīng)力-應(yīng)變曲線

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

圖5   Mn18Cr18N奧氏體不銹鋼壓縮拉伸的典型應(yīng)變和應(yīng)力值隨壓縮量的變化

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

圖6   Mn18Cr18N奧氏體不銹鋼后續(xù)拉伸屈強比隨壓縮量的變化

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

圖9   Mn18Cr18N奧氏體不銹鋼經(jīng)不同壓縮變形量后拉伸至斷裂的斷口形貌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)

圖10   Mn18Cr18N奧氏體不銹鋼不同壓縮量下微觀組織的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)

圖11   Mn18Cr18N奧氏體不銹鋼斷口縱截面組織的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)

圖12   Mn18Cr18N-high-manganese-non-magnetic-hard-wearing-steel-61-7963" target="_self" title="Mn18Cr18N">Mn18Cr18N奧氏體不銹鋼不同加載狀態(tài)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產(chǎn)品形態(tài)

• 熱軋和冷拉棒材, 圓棒, 扁鋼, 六角棒, 八角棒, 空心棒
• 帶鋼和鋼卷, 熱軋帶鋼, 熱軋鋼卷, 冷軋鋼帶, 冷軋鋼卷
• 冷軋板材, 熱軋板, 冷軋薄板, 中厚板, 高強鋼板
• 熱軋和冷拉異型鋼, 凹凸字鋼, 滑軌, 滑塊
• 熱軋和冷拉鋼絲, 扁絲, 盤條, 直條
• 自由鍛和模鍛, 扁鋼, 模塊, 環(huán), 桶, 餅, 階梯軸及定制化
• 熱擠壓和冷軋無縫管, 異型管, 方管, 毛細(xì)管
• 電渣錠

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