Advanced Hterogeneous Metallic Materials

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 31 August 2024 | Viewed by 1258

Special Issue Editor


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Guest Editor
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, China
Interests: stacking fault energy; mechanical properties; gradient structure; deformation mechanism

Special Issue Information

Dear Colleagues,

It is well known that bulk nanostructured metallic materials generally exhibit high strength but poor ductility, which greatly hinders their applications. Recently, heterogeneous metallic materials have proven to be a new strategy for attaining unprecedented mechanical properties compared to conventional homogenous materials, including gradient structure, heterogeneous lamella structure, bimodal structure, harmonic structure, laminate structure, dual-phase steel, nanodomained structure, nanotwinned grains, etc. These structural heterogeneities trigger stress/strain partitioning between domains with significantly different strengths during strain. Recent advances in the preparation technologies of heterostructured materials have yielded an understanding of the underlying deformation mechanisms. The investigation of heterogeneous metallic materials is one of the most promising emerging areas of advanced structural materials systems. This Special Issue covers a wide range of topics in the field of heterogeneous metallic materials and we cordially invite original research articles and reviews on recent achievements in the following areas related to heterostructured materials:

Prof. Dr. Xinkun Zhu
Guest Editor

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Keywords

  • development of novel experimental methods on heterostructured materials
  • deformation mechanisms and experimental mechanics
  • mechanical and physical properties
  • computational and analytical modeling
  • microstructural evolution and characterization

Published Papers (1 paper)

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Research

16 pages, 17757 KiB  
Article
Effects of SMAT Temperature and Stacking Fault Energy on the Mechanical Properties and Microstructure Evolution of Cu-Al-Zn Alloys
by Zhuangdi Zhou, Yulan Gong, Lele Sun, Cong Li, Jingran Yang, Zhuang Kang, Shen Qin, Shuwei Quan and Xinkun Zhu
Metals 2023, 13(12), 1923; https://doi.org/10.3390/met13121923 - 22 Nov 2023
Viewed by 887
Abstract
Alloys with a gradient structure (GS) exhibit a superior combination of strength and ductility. However, the effects of treatment temperature and stacking fault energy on the tensile behavior and microstructure evolution of GS alloys have not been systematically investigated. In this study, GS [...] Read more.
Alloys with a gradient structure (GS) exhibit a superior combination of strength and ductility. However, the effects of treatment temperature and stacking fault energy on the tensile behavior and microstructure evolution of GS alloys have not been systematically investigated. In this study, GS Cu-Al-Zn alloys with different stacking fault energy (SFE, 40/7 mJ/m2) were prepared using surface mechanical attrition treatment (SMAT) at cryogenic and room temperature, respectively. The microstructure results indicate that more stacking faults and deformation twins were activated in the SFE-7 alloys at cryogenic temperature, which led to higher strength compared to that of the alloys SMAT-ed at room temperature. In addition, it was found that the yield strength and hetero-deformation-induced (HDI) stress of the SFE-7 alloy were significantly higher than those of the SFE-40 alloy, resulting in a good combination of strength and ductility. Furthermore, more dispersed strain bands were observed in the SFE-7 sample during whole tensile deformation, which contributes to higher ductility. Full article
(This article belongs to the Special Issue Advanced Hterogeneous Metallic Materials)
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