High-Strength and High-Toughness magnesium Based Alloy, Driving System Part Using the Same and Manufacturing Method of High-Strength and High-Toughness magnesium Based Alloy Material
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United States of America Patent
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Issued Date -
Nov 8, 2007
app pub date -
May 18, 2005
filing date -
Jun 15, 2004
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Abandoned
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Abstract
A high-strength and high-toughness magnesium based alloy contains, by weight, 1 to 8% rare earth element and 1 to 6% calcium and the maximum crystal grain diameter of magnesium constituting a matrix is not more than 30 .mu.m. At least one intermetallic compound (6) of rare earth element and calcium has a maximum grain diameter of 20 .mu.m or less and it is dispersed in a crystal grain boundary (5) and a crystal grain (4) of magnesium of the matrix.
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