Rolled magnesium alloy material, magnesium alloy structural member, and method for producing rolled magnesium alloy material
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United States of America Patent
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Mar 21, 2017
Grant Date -
Nov 28, 2013
app pub date -
Feb 13, 2012
filing date -
Feb 14, 2011
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Abstract
Provided are a rolled Mg alloy material whose mechanical properties are locally different in a width direction, a Mg alloy structural member produced by plastically working the rolled Mg alloy material, and a method for producing the rolled Mg alloy material. The method for producing a rolled Mg alloy material includes rolling a Mg alloy material with a reduction roll. The reduction roll has three or more regions in the width direction. The temperature is controlled in each of the regions so that a difference between a maximum temperature and a minimum temperature exceeds 10° C. in the width direction of a surface of the reduction roll. The rolled state in the width direction is varied by varying a difference in temperature over the width direction of the reduction roll. As a result, it is possible to produce a rolled Mg alloy material whose mechanical properties are locally different in the width direction.
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