(1 西安交通大学材料科学与工程学院, 西安 710049)
2 洛阳工学院材料系,洛阳 471039)
摘 要: 对快速凝固Cu-0.6Cr-0.15Zr-0.05Mg合金伴随时效析出的再结晶过程进行了观察和研究。发现该合金在形变后的时效过程中,析出相非常细小、弥散,阻碍了再结晶的进行,出现了原位再结晶与不连续再结晶同时发生的现象。在再结晶的形核和长大过程中,析出相在晶界前沿快速粗化或重新溶解,并在再结晶区域中重新析出,导致更加弥散的析出相分布。
关键字: 快速凝固 Cu-Cr-Zr-Mg合金 时效析出 再结晶
(School of Materials Science and Engineering,Xi'an Jiaotong University, Xi'an 710049, P. R. China
Department of Materials, Luoyang Institute of Technology, Luoyang 471039, P. R. China)
Abstract:The recrystallization process during aging for a rapidly so lidified Cu-Cr-Zr-Mg alloy was investigated. It was found that the discontinuous recrystallization process has been partially retarded by the ultra-fine and dispersed precipitation during aging after deformation. Thus, a phenominon of simultaneous in situ and discontinuous recrystallizations has been observed in the rapidly solidified Cu-Cr-Zr-Mg alloy. On the formation and growth forecrysta llization, the precipitated phases are coarsened and dissolved in the front of g rain boundaries following a re-precipitation in the recrystallization area, whi ch results in the much more dispersed precipitation of the phases.
Key words: rapid solidification Cu-Cr-Zr-Mg alloy aging precipitation recrystallization