摘要
利用光学显微镜、扫描电子显微镜、X射线衍射仪等分析手段研究了固溶时效及退火工艺对AZ80铸造镁合金显微组织的影响。结果表明,固溶处理可获得单相α-Mg固溶体组织;在随后的时效处理中β-Mg17Al12相以连续析出和不连续析出两种方式重新析出;在退火处理的缓慢冷却过程中β-Mg17Al12相以层片状形式析出;退火后的球化处理使层片状β-Mg17Al12相通过自身溶断的方式获得均匀细小的球状β-Mg17Al12相。
The effects of solution-aging and annealing treatment on microstructure of AZ80 magnesium alloy are investigated by means of optical microscopy,scanning electron microscopy and X-ray diffraction.The results show that the single supersaturated solid solution can be obtained after solution treatment,and that the β-Mg17Al12 phase is separated out from α-Mg matrix with discontinuous and continuous precipitations in the subsequent aging treatment.During the slow cooling process of annealing treatment,the lamellar β-Mg17Al12 phase is precipitated from α-Mg matrix.The lamellar β-Mg17Al12 phase can be transformed into nodular β-Mg17Al12 phase by dissolving themselves in the following spheroidizing treatment.Then,the small,uniform and nodular β-Mg17Al12 phase can be obtained.
出处
《西安理工大学学报》
CAS
北大核心
2012年第1期111-114,共4页
Journal of Xi'an University of Technology
基金
西安理工大学2012年校青年基金资助项目(101-211110)
关键词
固溶时效
退火处理
AZ80镁合金
显微组织
solution-aging
annealing treatment
AZ80 magnesium alloy
microstructure
