(1. 重慶大學(xué) 國(guó)家鎂合金工程技術(shù)研究中心，重慶 400044；
2. 重慶大學(xué) 材料科學(xué)與工程學(xué)院，重慶 400045)
摘 要: 闡述了具有析出沉淀相鎂合金變形行為的研究現(xiàn)狀；概括了析出沉淀相對(duì)鎂合金微觀變形機(jī)制和再結(jié)晶行為的影響；總結(jié)了析出沉淀相的硬化機(jī)理以及不同形態(tài)析出物的硬化模型；提出了此研究領(lǐng)域亟待解決的科學(xué)問題。目前，針對(duì)析出沉淀相的形態(tài)、分布以及慣習(xí)面對(duì)鎂合金不同滑移系和孿生行為的影響尚缺乏系統(tǒng)的研究；關(guān)于析出相與再結(jié)晶機(jī)制的交互作用并沒有得到重視；此外，適用于析出沉淀強(qiáng)化鎂合金更為普遍的硬化模型有待進(jìn)一步研究。
關(guān)鍵字: 鎂合金；沉淀相；變形機(jī)制；再結(jié)晶；強(qiáng)度
deformation mechanism of magnesium alloys
（1. National Engineering Research Centre for Magnesium Alloys, Chongqing University, Chongqing 400044, China;
2. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China）
Abstract:Some aspects of the present research on the deformation behavior in magnesium alloys containing precipitates were reviewed. The effect of precipitation on the deformation mechanisms and the recrystallization behavior of magnesium alloys was discussed, and the strengthening mechanism and model of the precipitates with different features were also reviewed. Finally, a few critical scientific problems in this research field were pointed out. Currently, the effects of the morphology, distribution and habit plane of the precipitates in magnisium alloys on different slip systems and twinning behavior have not been systematically studied. Comparatively little attention has been paid to the interaction between the precipitates and the recystallization. Moreover, further studies are needed to figure out a more general strengthening model suitable for the precipitation-strengthened magnisium alloys.
Key words: magnesium alloys; precipitate; deformation mechanism; recrystallization; strength
