Jinlong Lv, Tongxiang Liang, Chen Wang, Limin Dong
Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China.
Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China.
Mater Sci Eng C Mater Biol Appl. 2016 May;62:558-63. doi: 10.1016/j.msec.2016.02.008. Epub 2016 Feb 5.
The ultrafine grained 2205 duplex stainless steel was obtained by cold rolling and annealing. The tensile properties were investigated at room temperature. Comparing with coarse grained stainless steel, ultrafine grained sample showed higher strength and plasticity. In addition, grain size changed deformation orientation. The strain induced α'-martensite was observed in coarse grained 2205 duplex stainless steel with large strain. However, the grain refinement inhibited the transformation of α'-martensite;nevertheless, more deformation twins improved the strength and plasticity of ultrafine grained 2205 duplex stainless steel. In addition, the grain refinement improved corrosion resistance of the 2205 duplex stainless steel in sodium chloride solution.
通过冷轧和退火获得了超细晶粒2205双相不锈钢。在室温下研究了其拉伸性能。与粗晶粒不锈钢相比，超细晶粒样品表现出更高的强度和塑性。此外，晶粒尺寸改变了变形取向。在大应变的粗晶粒2205双相不锈钢中观察到应变诱导α'-马氏体。然而，晶粒细化抑制了α'-马氏体的转变；尽管如此，更多的变形孪晶提高了超细晶粒2205双相不锈钢的强度和塑性。此外，晶粒细化提高了2205双相不锈钢在氯化钠溶液中的耐腐蚀性。
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