ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Uniaxial hot compression tests were performed at constant temperature (T) and strain rate(ε& ) in the ranges of 200-500 ℃ at an interval of 50 ℃ and 0.001-20 s-1. The flow stress data wereused to develop the extrusion limit diagram for AZ31 and AM30 magnesium tubes. The extrusionlimit diagram shows a wide region available for extruding AZ31 and AM30 seamless tubes, andcomparison of the two extrusion limit diagrams shows that, the extrudability of AM30 alloy is betterthan that of AZ31 alloy. Actual extrusion trials validated the predicted temperature rise limit curvecorresponding to the occurrence of surface cracking during the extrusion process. Magnesium tubeswere successfully extruded according to the safe regions identified by the extrusion limit diagram
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.327.pdf
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