Rudskoi Andrei, Kodzhaspirov Georgii
Materials Science Centre, Peter the Great Saint-Petersburg Polytechnic University, 195251 St. Petersburg, Russia.
Materials (Basel). 2022 Apr 11;15(8):2784. doi: 10.3390/ma15082784.
Influence of strain accumulation schedule during hot rolling, under the thermomechanical control process (TMCP) on the structure evolution and carbide transformations of Cr-Ni-Ti austenitic stainless steel, is studied. The cellular, fragmented dislocation substructure and dynamically recrystallized (DRX) structure are observed in the steel with different strain accumulation schedules. It was found that the strain accumulation schedule, especially fractionality, affects the work-hardening and softening behavior quite significantly. The role of the strain accumulation schedule on the fragmented substructure and DRX structure evolution as well as carbide transformations and the relationship between the microstructure changes due to TMCP and the mechanical properties of studied steel, involving the recent ideas of the physics of large plastic strains, are considered.
研究了在热机械控制工艺（TMCP）下热轧过程中的应变累积方式对Cr-Ni-Ti奥氏体不锈钢组织演变和碳化物转变的影响。在具有不同应变累积方式的钢中观察到了胞状、破碎位错亚结构和动态再结晶（DRX）组织。发现应变累积方式，特别是分数性，对加工硬化和软化行为有相当显著的影响。考虑了应变累积方式在破碎亚结构和DRX组织演变以及碳化物转变方面的作用，以及TMCP引起的微观结构变化与所研究钢的力学性能之间的关系，其中涉及大塑性应变物理的最新观点。
