(湖南大學(xué) 材料科學(xué)與工程學(xué)院，長(zhǎng)沙 410082)
摘 要: 綜述不同成形條件下的鎂合金激活能及本構(gòu)方程，對(duì)粗晶和細(xì)晶鎂合金的超塑性變形機(jī)理予以詳細(xì)的介紹。并對(duì)常見的幾種鎂合金超塑性加工方式進(jìn)行探討，并概述超塑性鎂合金的發(fā)展趨勢(shì)，認(rèn)為未來(lái)超塑性鎂合金將取得快速發(fā)展。獲得高應(yīng)變速率與低溫超塑性鎂合金并實(shí)現(xiàn)鎂合金低成本化、安全化、環(huán)保化是目前研究的熱點(diǎn)。
關(guān)鍵字: 鎂合金；超塑性；高應(yīng)變速率超塑性；超塑性成形
（School of Materials Science and Engineering, Hunan University, Changsha 410082, China）
Abstract: The active energy and constitutive equations of magnesium alloys formed under different conditions were reviewed. The superplastic characteristics of coarse and fine-grained magnesium alloys were summarized. Then the ways of superplastic deformation were briefly analyzed. The results show that the development trend of superplastic magnesium alloys has been advanced remarkably and will be developed rapidly in the future. Obtaining high-strain rate and low-temperature superplastic magnesium alloys, deducing cost, safety and environmental protection are the researching focuses nowadays.
Key words: magnesium alloys; superplasticity; high strain rate superplasticity; superplastic forming
