A critical assessment of experimental investigation of dynamic recrystallization of metallic materials

A critical assessment of experimental investigation of dynamic recrystallization of metallic materials
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金属材料动态再结晶实验研究的关键评估

DOI:
10.1016/j.matdes.2020.108873
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发表时间:
2020-08
影响因子:
8.4
通讯作者:
K. Huang
K. Huang
中科院分区:
材料科学1区
文献类型:
--
作者:
H.K. Zhang;H. Xiao;X.W. Fang;Q. Zhang;R.E. Logé;K. Huang

文献摘要

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金属材料热变形过程中经常发生动态再结晶(DRX),对成形件的组织和力学性能产生重要影响。然而,相当数量的与DRX相关的已发表论文都存在源于不适当的实验设计的不可忽视的缺陷。在本文中,这些缺陷的来源进行了严格的评估,包括动态再结晶机制的误解,应变局部化的测试样品,被忽视的后动态再结晶和可能的相变掩盖了真实的热变形组织。解决方案,以消除或量化这些干扰因素在动态再结晶研究的建议,产生更准确的方法来调查金属材料的动态再结晶行为。
Dynamic recrystallization (DRX) often takes place during hot deformation of metallic materials, which then exerts significant influence on the final microstructures and mechanical properties of the formed components. A considerable number of published papers related to DRX, however, suffer from non-negligible flaws originating from inappropriate experimental design. In this paper, the sources of these flaws are critically assessed, including the misinterpretation of DRX mechanisms, the strain localization on tested samples, the neglected post dynamic recrystallization and possible phase transformations which mask the real hot deformation microstructure. Solutions to eliminate or quantify these disturbing factors during DRX studies are suggested, yielding more accurate approaches to investigate DRX behaviour of metallic materials.
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期刊: --
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