Fe-1.12Cu合金中Cu的脱溶  

Precipitation of Cu in Fe-1.12Cu Alloy

作　　者：刘宗昌[1] 李文学[1] 王玉峰[1] 王海燕[1] 安治国[1] 任慧平[1] 

机构地区：[1]内蒙古科技大学材料科学与工程学院,内蒙古包头014010

出　　处：《金属热处理》2005年第6期40-45,共6页Heat Treatment of Metals

基　　金：国家自然科学基金项目(50361001)

摘　　要：含铜高纯低碳钢具有高强度、高韧性等多种优良的性能。本文研究了Fe-1.12Cu合金在固溶、沉淀过程中组织结构的变化规律。结果表明,Fe-1.12Cu合金在固溶态存在铜原子的偏聚区,呈现短程有序结构;在时效峰处,铜原子在有序畴中呈现有序排列,并与基体共格;在过时效阶段,有序畴经类B2结构等过渡相,逐渐演化成fcc的ε-Cu颗粒。High purity low-carbon steel containing copper has many excellent properties, such as high strength, high toughness, etc. The structure transformation rules of Fe-1.12Cu alloy during solution and aging treatment were studied. The results show that Cu atom cluster exists as a kind of short distance ordering structure in solution states. Copper atom appears as orderly arrangement in the ordering domain and keeps coherent with matrix in aging peak. During over-aging, the ordering domain transforms into transient-phase, i.e B2-like structure, etc, which evolves into fcc ε-Cu particles eventually.

关 键 词：含铜高纯净钢 有序畴 固溶 脱溶 时效 

分 类 号：TG146.1[一般工业技术—材料科学与工程]