Microstructures and mechanical properties of hot rolled AZ31 Mg alloy sheets

• Published in: Transactions of Nonferrous Metals Society of China Vol. 16; no. A03; pp. 1746 - 1749
• Main Author: 范立坤 董杰 张平 曾小勤 丁文江
• Format: Journal Article
• Language: English
• Published: National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University,Shanghai 200030, China 01.12.2006
• Subjects: 微观结构; 机械性能; 热轧工艺; 镁合金; magnesium sheet hot rolling technique; microstructure evolution; grain refinement
• ISSN: 1003-6326

The microstructures and mechanical properties of hot rolled AZ31 Mg alloy sheets were studied to understand the microstructure evolution during AZ31 Mg alloy hot rolling process. The roller was heated to 180 ℃ with burning hydrogen, and the extruded plates were rolled at 400 ℃ from 10 to 1 mm with a reduction of 30% in thickness per pass. The result shows that there is no side-cracking of these rolled sheets every pass. The extruded microstructures are greatly refined and mechanical properties are improved. The fine grains of about 4μm were obtained of the final 0.9 mm sheets.