High-pressure torsion of pure magnesium: Evolution of mechanical properties, microstructures and hydrogen storage capacity with equivalent strain
High-pressure torsion of pure magnesium: Evolution of mechanical properties, microstructures and hydrogen storage capacity with equivalent strain
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DOI：
10.1016/j.scriptamat.2011.01.023
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发表时间：
2011-05-01
影响因子：
6
通讯作者：
Ishihara, Tatsumi
中科院分区：
文献类型：
--
作者：
Edalati, Kaveh;Yamamoto, Akito;Ishihara, Tatsumi
纯镁(99.9%)在室温下经高压扭转(HPT)处理。硬度随应变的变化规律与纯铝(99.99%)相似，先有一个硬度极大值，然后达到一个稳定状态。HPT处理提高了硬度和抗拉强度。HPT获得了平均晶粒度约为1µm的双峰组织，部分晶界无位错。经过10次旋转后，HPT的吸氢量有所提高，总吸氢量达到6.9wt.%。(C)2011 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
Pure Mg (99.9%) is processed by high-pressure torsion (HPT) at room temperature. The hardness behavior with imposed strain is similar to pure Al (99.99%), having a hardness maximum followed by a steady state. HPT processing increases the hardness and tensile strength. A bimodal microstructure with an average grain size of similar to 1 mu m is developed by HPT with some grains free of dislocations. Hydrogen absorption is improved by HPT after 10 revolutions, and a total hydrogen absorption of 6.9 wt.% is achieved. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.