Fatigue behaviour of light alloys with ultrafine grain structure produced by severe plastic deformation: An overview
Fatigue behaviour of light alloys with ultrafine grain structure produced by severe plastic deformation: An overview
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DOI：
10.1016/j.ijfatigue.2009.06.022
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发表时间：
2010-06-01
影响因子：
6
通讯作者：
Vinogradov, Alexei
中科院分区：
文献类型：
--
作者：
Estrin, Yuri;Vinogradov, Alexei
本文综述了轻合金经剧烈塑性变形（SPD）后晶粒尺寸减小到微米或亚微米级的疲劳行为。虽然通过这种极端的晶粒细化可以相当可观地提高拉伸强度，但疲劳强度通常不会提高到相同的程度。这种观察结果对于Al、Mg和Ti基合金是常见的，并且似乎不归因于特定的晶体结构。各种影响，可能会影响这种行为进行审查，并强调的作用，合金化的影响作为疲劳强度的主要贡献者。溶质对疲劳强度的直接贡献通常大于其通过影响晶粒细化而产生的间接作用。最近的例子，从文学和我们自己的工作，以证实文章中表达的观点。(C)2009爱思唯尔有限公司版权所有。
The fatigue behaviour of light alloys with grain sizes reduced to the micron or submicron scale by severe plastic deformation (SPD) is reviewed. While the enhancement of tensile strength by this extreme grain refinement can be quite appreciable, the fatigue strength is usually not improved to the same extent. This observation is common to Al, Mg and Ti based alloys and does not appear to be attributable to a particular crystallographic structure. Various effects that may influence this behaviour are reviewed, and emphasis is put on the role of the alloying effects as the main contributors to fatigue strength. The direct contribution of solutes to fatigue strength is usually stronger than their indirect effect through the influence of solutes on the grain refinement. Recent examples from literature and our own work are presented to corroborate the views expressed in the article. (C) 2009 Elsevier Ltd. All rights reserved.