1.18Cu 高纯钢等温时效时富铜相的析出行为

特殊钢 ›› 2006, Vol. 27 ›› Issue (2): 20-22.

1.18Cu 高纯钢等温时效时富铜相的析出行为

安治国，任慧平，刘宗昌，王海燕

内蒙古科技大学材料科学与工程学院，包头 014010

收稿日期:2005-09-02 出版日期:2006-04-01 发布日期:2023-02-27
作者简介:安治国(1979-)，男，硕士研究生，从事新材料研究。
基金资助:
国家自然科学基金资助项目(50361001)

Precipitation Behavior of Rich Copper Phase in 1.18Cu High Purity Steel during Isothermal Aging

An Zhiguo , Ren Huiping , Liu Zongchang , Wang Haiyan

Material Science and Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010

Received:2005-09-02 Published:2006-04-01 Online:2023-02-27

摘要/Abstract

摘要： 用扫描电子显微镜(SEM)、高分辨电子显微镜(HREM)和HV50硬度计,试验研究了含铜高纯钢(%:0.014C,0.10Mn,0.05Si,1.18Cu,＜0.002S，0.006P) 650℃ 100 s～300 h等温时效时的组织和硬度。结果表明,650℃等温时效时富铜相优先在铁素体晶界析出,随等温时效时间增加,富铜相尺寸增大。650℃等温时效103s时,富铜过渡相与铁素体基体保持共格性,使硬度达到最大值。在过时效期间,富铜过渡相逐渐演化成fcc ε-Cu颗粒

关键词: 含铜高纯钢, 时效硬化, 富铜过渡相

Abstract: The structure and hardncss of contained Cu high purity steel -0.014C,0. 10Mn,0.05Si,1.18Cu,＜0.002S,0.006P during isothermnal aging at 650 ℃ for 100 s~300 h have been tested and studied by scanning and high resolution electron microscope and HV50 hardhness tester. The test results showed that with aging at 650 ℃,the rich copper phase particles precipitated prior at ferrite grain boundary,and with increasing isothermal aging time the size of rich copper phase increased. As aging at 650 ℃ for 10' s,the rich copper transient phase kept coherency with ferrite matrix led to maximum hardness value.And during overaging period,the transient phase evolved gradually into fcc e-Cu particle.

Key words: High Purity Steel Containing Cu, Age-Hardening, Rich Copper Transient Phase

安治国, 任慧平, 刘宗昌, 王海燕. 1.18Cu 高纯钢等温时效时富铜相的析出行为[J]. 特殊钢, 2006, 27(2): 20-22.

An Zhiguo , Ren Huiping , Liu Zongchang , Wang Haiyan. Precipitation Behavior of Rich Copper Phase in 1.18Cu High Purity Steel during Isothermal Aging[J]. Special Steel, 2006, 27(2): 20-22.