Experimental study on rotary draw bending of magnesium alloy extruded tubes

In this research, the rotary draw bending of magnesium alloy extruded tubes was experimentally investigated. At room temperature, circular magnesium alloy tubes were bent without cracking and wrinkling, but with defective shape. The mandrel effect on the cross-sectional distortion, wall-thickness va...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-02, Vol.770 (1), p.12113
Main Authors: Zhao, P J, Bai, S W, Fang, G
Format: Article
Language:English
Subjects:
Cross-sections
Distortion
Draw bending
Extrusion
Magnesium alloys
Magnesium base alloys
Room temperature
Shape effects
Tubes
Wall thickness
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Summary:In this research, the rotary draw bending of magnesium alloy extruded tubes was experimentally investigated. At room temperature, circular magnesium alloy tubes were bent without cracking and wrinkling, but with defective shape. The mandrel effect on the cross-sectional distortion, wall-thickness variation, and spring-back of the bent tube were analyzed and discussed. Results indicated that the rotary draw bending with the mandrel decreased the cross-sectional distortion and spring-back angle of the bent tube, slightly exacerbating the thinning rate of the tube wall thickness. The largest distortion of the cross-section of circular bent tubes with a 90° bending angle occurred in the position about 30° from the clamp die.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/770/1/012113