Compositional optimization of Mg-Sn-Al alloys for higher age hardening response
Compositional optimization of Mg-Sn-Al alloys for higher age hardening response
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DOI：
10.1016/j.msea.2012.12.041
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发表时间：
2013-03-20
期刊：
影响因子：
6.4
通讯作者：
Hono, K.
中科院分区：
文献类型：
--
作者：
Elsayed, F. R.;Sasaki, T. T.;Hono, K.
研究了添加Al和微合金化对Mg-Sn合金时效硬化响应的影响，以优化最高时效硬化响应的成分。添加3at%的Al导致峰值硬度的最佳提高，在200 ℃下为72 HV。通过用0.5Zn进行微合金化，时效硬化响应从73 HV进一步提高到81 HV，导致Mg-2.2Sn-3Al-0.5Zn（at%）或Mg-9.8Sn-3.0Al-1.2Zn（wt%）的优化合金成分，即，TAZ1031峰值强度和时效行为的增强归因于Al的固溶硬化、Mg 2Sn析出相的细化、Mg 17 Al 12析出相的出现以及非基体Mg 2Sn析出相数量密度的增加。(c)2012爱思唯尔有限公司版权所有。
The effect of Al additions and microalloying on the age hardening response of Mg-Sn alloys has been investigated to optimize the composition for the highest age hardening response. The addition of 3 at%Al lead to the best enhancement in peak hardness being 72 HV at 200 degrees C. The age hardening response was further enhanced from 73 to 81 HV by microalloying with 0.5 Zn, leading to the optimized alloy composition of Mg-2.2Sn-3Al-0.5Zn (at%) or Mg-9.8Sn-3.0Al-1.2Zn (wt%), i.e., TAZ1031. The enhancement in the peak strength and aging behavior is attributed to the solid solution hardening due to Al, the refinement of the Mg2Sn precipitates, the occurrence of Mg17Al12 precipitates, and the increase in the number density of non-basal Mg2Sn precipitates. (c) 2012 Elsevier B.V. All rights reserved.