Abstract—

This work studies the structure and texture evolution in the 03Kh19N10 corrosion-resistant metastable austenitic steel (0.05C–18.2Cr–8.8Ni–1.65Mn–0.43Si–0.05P–0.04S wt %, and Fe for balance) during cold rolling, which results in twinning and martensitic transformation. The strain-induced martensite nucleates heterogeneously in the microshear bands and at their intersections. The fraction of strain-induced martensite increases with increasing true strain and approaches 80% at е = 3. The development of deformation twins, microshear bands, and martensitic crystallites results in the formation of a uniform nanocrystalline structure consisting of elongated γ/α' crystallites 100 nm in cross-section size after large deformation (е = 2–3). The austenite texture after cold rolling is characterized by the strong Brass ({110} 〈112〉) and Goss ({110}〈001〉) texture components, whereas the strain-induced martensite texture is characterized by strong texture component I* ({223}〈110〉) and an increased orientation density along γ fiber (〈111〉 ∥ ND). The orientation of the γ/α'-phase boundaries depends on the strain value.

中文翻译：

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亚稳态奥氏体钢冷加工时的组织和织构演变

摘要—

这项工作研究了03Kh19N10耐腐蚀亚稳态奥氏体钢（0.05C–18.2Cr–8.8Ni–1.65Mn–0.43Si–0.05P–0.04S wt％，Fe为平衡）期间的组织和织构演变，导致孪晶和马氏体转变。应变诱导的马氏体在微剪切带及其相交处异质形核。应变引起的马氏体分数随真实应变的增加而增加，在е = 3时接近80％。形变孪晶，微剪切带和马氏体微晶的发展导致形成由伸长的γ/α'微晶组成的均匀纳米晶结构。大变形后的横截面尺寸为100 nm（е = 2–3）。冷轧后的奥氏体织构的特征在于强的黄铜（{110} 〈112〉）和高斯（{110} 〈001〉）织构，而应变诱发的马氏体织构的特征在于坚固的织构分量I *（{ 223} 〈110〉）和沿γ纤维的取向密度增加（〈111〉∥ND）。γ/α'相边界的取向取决于应变值。