Excellent Strength-Impact Toughness Combination of Heterostructured Metastable Fe-Rich Medium-Entropy Alloy.

• Tác giả: Ruslan Chernichenko, Egor Kudryavtsev, Stanislav Naumov, Dmitrii Panov, Alexey Pertcev, Gennady Salishchev, Nikita Stepanov, Sergey Zherebtsov
• Ngôn ngữ: eng
• Ký hiệu phân loại: 536.52 Measurement of high temperatures (Pyrometry)
• Thông tin xuất bản: Switzerland : Materials (Basel, Switzerland) , 2025
• Bộ sưu tập: NCBI
• ID: 76917

Tóm tắt

The effect of a heterogeneous structure obtained via cold rotary swaging (CRS) and post-deformation annealing (PDA) on the dynamic mechanical properties of a non-equiatomic 49.5Fe-30Mn-10Co-10Cr-0.5C (at.%) medium-entropy alloy at room and cryogenic temperatures was studied. CRS to a reduction of 92% and subsequent PDA at 500-600 °C developed a heterogeneous structure consisting of a twinned γ-matrix and dislocation-free γ-grains in the rod core and an ultrafine-grained microstructure of γ-phase at the rod edge. Therefore, the maximum stress (σ