Transactions of the Indian Institute of Metals ( IF 1.6 ) Pub Date : 2022-07-27 , DOI: 10.1007/s12666-022-02689-0 Reshma Sonkusare , Krishanu Biswas , Weimin Gan , H. G. Brokmeier , N. P. Gurao
CoCuFeMnNi complex concentrated alloy was subjected to hot compression at different temperatures and strain rates. Texture evolution for four representative samples was studied using electron backscatter diffraction, neutron diffraction and viscoplastic self-consistent simulations. EBSD revealed highest low angle grain boundaries and high angle grain boundaries for sample C (1273 K, 1 s−1) indicating deformation and recrystallization, respectively, and highest very low angle grain boundaries for sample D (1273 K, 0.001 s−1) indicating recovery. The bulk texture shows < 110 > compression texture, with dominance of partial slip over octahedral slip. Zener–Hollomon parameter was found to increase in the order D < B < C < A, with sample A (1073 K, 1 s−1) exhibiting lowest crystallite size and sample D (1273 K, 0.001 s−1) with highest crystallite size, consistent with the microstructural data. The texture analysis shows a partial slip-dominated dynamically recovered microstructure for sample A (1073 K, 1 s−1) and discontinuous dynamically recrystallized microstructure for sample D (1273 K, 0.001 s−1).
中文翻译:
利用中子衍射和晶体塑性模拟对 CoCuFeMnNi 复合浓缩合金热压缩过程中的织构演变
CoCuFeMnNi复合浓缩合金在不同温度和应变率下进行热压缩。使用电子背散射衍射、中子衍射和粘塑性自洽模拟研究了四个代表性样品的纹理演变。EBSD 揭示了样品 C (1273 K, 1 s -1 )的最高低角度晶界和高角度晶界分别表明变形和再结晶,以及样品 D 的最高极低角度晶界 (1273 K, 0.001 s -1 )表示恢复。块体织构显示出<110>压缩织构,部分滑移优于八面体滑移。发现 Zener–Hollomon 参数以 D < B < C < A 的顺序增加,样品 A (1073 K, 1 s -1) 表现出最低的微晶尺寸,样品 D (1273 K, 0.001 s -1 ) 具有最高的微晶尺寸,与微观结构数据一致。织构分析显示了样品 A (1073 K, 1 s -1 )的部分滑移主导的动态恢复微观结构和样品 D (1273 K, 0.001 s -1 )的不连续动态再结晶微观结构。