Exceptionally high strength in Mg-3Al-1Zn alloy processed by high-ratio differential speed rolling
Exceptionally high strength in Mg-3Al-1Zn alloy processed by high-ratio differential speed rolling
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DOI：
10.1016/j.scriptamat.2011.09.029
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发表时间：
2011-12-01
影响因子：
6
通讯作者：
Park, Y. B.
中科院分区：
文献类型：
--
作者：
Kim, W. J.;Lee, Y. G.;Park, Y. B.
通过优化大速比差速轧制工艺参数，建立了一种制备超高强度工业Mg-3Al-1 Zn（AZ 31）合金的新工艺。在423 K的HRDSR之后，接着立即水淬，获得0.6 μ m的晶粒尺寸。超细晶AZ 31具有382 MPa的非常高的屈服应力。研究和讨论了HRDSR工艺条件对该合金显微组织和力学性能的影响。(C)2011 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
A novel route to prepare an ultrahigh-strength commercial Mg-3Al-1Zn (AZ31) alloy was established by optimizing the processing parameters of high-ratio differential speed rolling (HRDSR). After HRDSR at 423 K followed by immediate water quenching, a grain size of 0.6 mu m was obtained. The ultrafine-grained AZ31 exhibited a very high yield stress of 382 MPa. The effects of the HRDSR conditions on the microstructures and mechanical properties of this alloy were examined and discussed. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.