Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 22    No. 2    December 2012

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Springback characteristics of AZ31 magnesium alloy as-extruded profile in warm tension-rotation bending process
XIAO Han1, ZHANG Shi-hong2, ZHOU Rong1, LU De-hong1

1. School of Materials Science and Engineering,
Kunming University of Science and Technology, Kunming 650093, China;
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Abstract:The warm tension-rotation bending process of AZ31 magnesium alloy as-extruded profile with thin-walled and multi-rib was researched by numerical and experimental methods. The effects of process parameters on springback characteristics of AZ31 bent profile were investigated. The results indicate that when the forming temperature increases from 100 °C to 200 °C, the numerical and experimental springback angles of AZ31 bent profile all decrease, the experimental springback angle decreases from 11.6° to 10.7°, and the springback ratio reduces from 11.26% to 10.39%. The relationship between the forming temperature and the springback angle seems to be linear. When the bending angle increases from 100° to 110°, the numerical and experimental springback angles of AZ31 bent profile all increase, the experimental springback angle increases from 10.8° to 11.5°, and the springback ratio increases from 10.48% to 11.16%. When the pre-tension amount increases from 0.2% to 1.1%, the numerical and experimental springback angles of AZ31 bent profile all decrease, the experimental springback angle decreases from 12.5° to 9.8°, and the springback ratio decreases from 12.14% to 9.51%.

 

Key words: AZ31 magnesium alloy; as-extruded profile; tension-rotation bending; numerical simulation; springback

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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