有色金属科学与工程2025，Vol.16Issue(6)：894-902,964,10.DOI:10.13264/j.cnki.ysjskx.2025.06.007
冷轧退火处理对双相FeCrNi多主元合金组织及低温力学性能的影响
Effect of cold-rolled and annealed treatment on the microstructure and cryogenic mechanical properties of a dual-phase FeCrNi multi-principal element alloy
摘要
Abstract
Fe40Cr40Ni20 multi-principal element alloy was prepared using vacuum induction melting,cold-rolling,and annealing.The transformation of the alloy's microstructure and its cryogenic mechanical properties at 77 K were investigated by X-ray diffraction(XRD),energy-dispersive spectroscopy(EDS),scanning electron microscopy(SEM),electron backscatter diffraction(EBSD),transmission electron microscopy(TEM),and tensile testing.The results indicated that the solid-solution alloy possesses a dual-phase heterostructure with face-centered cubic(FCC)and body-centered cubic(BCC)phases.After the cold-rolled and annealed treatment,the original FCC phase transformed into a heterostructure composed of fine FCC grains and BCC grains,while the original BCC phase evolved into a heterostructure consisting of non-recrystallized BCC matrix and short lamellar FCC phases.The cryogenic mechanical properties of the alloy were significantly enhanced after cold rolling and annealing,resulting in a yield strength of 1 318 MPa,an ultimate tensile strength of 1 558 MPa,and an elongation of 24.5%.The strengthening of the alloy is primarily attributed to the obstruction of dislocation motion by various interfaces,including the heterogeneous FCC/BCC interfaces,grain boundaries,and twin boundaries.The deformation mechanism of the alloy is mainly dislocation slip,supplemented by twinning.关键词
多主元合金/组织转变/异质结构/低温力学性能Key words
multi-principal element alloy/microstructure transformation/heterostructure/cryogenic mechanical properties分类
矿业与冶金引用本文复制引用
ZHANG Lu,ZHENG Jianming,SHAN Ling,WU Jinhua,YANG Hailin..冷轧退火处理对双相FeCrNi多主元合金组织及低温力学性能的影响[J].有色金属科学与工程,2025,16(6):894-902,964,10.基金项目
沈阳航空航天大学航空制造工艺数字化国防重点学科实验室开放基金资助项目(SHSYS202205) （SHSYS202205）
