Mechanical properties of Mg-6Gd-1Y-0.5Zr alloy processed by low temperature thermo-mechanical treatment

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Abstract

An as-solution treated Mg-6Gd-1Y-0.4Zr alloy was processed by low temperature thermo-mechanical treatments (LT-TMT), including cold tension with various strains followed by aging at 200 °C to peak hardness. The results show that the precipitation kinetics of the alloy experienced LT-TMT is greatly accelerated and the aging time to peak hardness is greatly decreased with increasing tensile strain. The tensile yield strength, ultimate tensile strength and elongation at room temperature of the alloy after cold tension with strain of 10 and peak aging at 200 °C are 251 MPa, 296 MPa and 8, respectively, which are superior to the commercial heat-resistant WE54 alloy, although the latter has a higher rare earth element content. © 2012 The Nonferrous Metals Society of China.

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Li, D. J., Zeng, X. Q., Xie, Y. C., Wu, Y. J., Ding, W. J., & Chen, B. (2012). Mechanical properties of Mg-6Gd-1Y-0.5Zr alloy processed by low temperature thermo-mechanical treatment. Transactions of Nonferrous Metals Society of China (English Edition), 22(10), 2351–2356. https://doi.org/10.1016/S1003-6326(11)61470-2

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