【作者】 陈小红； 李炎； 田保红； 康布熙； 刘平；

【Author】 CHEN Xiao-hong, LI Yan, TIAN Bao-hong, KANG Bu-xi, LIU Ping (School of Material Science and Engineering, HenNan University of Science and Technology, Luoyang 471003, China)

【机构】 河南科技大学材料科学与工程学院；

【摘要】 用透射电子显微镜对市售的两种编号为A、B的C194铜带的显微组织和析出相进行观察分析,结果表明两种试样的析出相中都有Fe₃P,只是A试样的析出相有三种,一是数量极少的粗大的γ-Fe,一是直径为100nm左右的球形颗粒α-Fe,另一种为50nm左右的微小粒子Fe₃P。B试样中只有分布均匀且密度较高的纳米微粒Fe₃P。B试样的微观结构均匀性优于A试样,且没有粗大的第二相γ-Fe和α-Fe,这是两者性能差异的主要原因。更多还原

【Abstract】 The microstructure and precipitated phase of Cu-Fe-P alloy （C194 alloy） was investigated by means of transmission electron microscopy （TEM）. There are two kinds of specimens named A and B. In specimen A, comparatively low density of dislocation in matrix and three kinds of precipitate were found: （a） a seldom or never dispersion and very coarse of γ-Fe with particle diameters of about 1 um and （b） randomly distributed spherical particles α-Fe with particle diameters of about 100 nm and （c） fine particles Fe₃P with diameter of about 15～40 nm. In specimen B, there are high density of dislocation in matrix and uniform distributed fine precipitates in the grain boundary and interior. The fine precipitates have been identified as coherent or semi-coherent tetragonal Fe₃P. Specimen B has more uniform microstructure than specimen A and had not found course precipitated phase, that is responsible for the good properties of specimen B.更多还原