Cargando…

Wear Behavior of the Multiheterostructured AZ91 Mg Alloy Prepared by ECAP and Aging

The microstructure design based on the development of heterostructure provides a new way for high strength and ductility Mg alloys. However, the wear property, as an important service performance, of Mg alloys with heterostructure is scarcely investigated. In this work, a high strength and ductility...

Descripción completa

Detalles Bibliográficos
Autores principales: Xu, Bingqian, Sun, Jiapeng, Yang, Zhenquan, Han, Jing, Song, Dan, Jiang, Jinghua, Ma, Aibin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7368236/
https://www.ncbi.nlm.nih.gov/pubmed/32728405
http://dx.doi.org/10.1155/2020/4873286
_version_ 1783560576736165888
author Xu, Bingqian
Sun, Jiapeng
Yang, Zhenquan
Han, Jing
Song, Dan
Jiang, Jinghua
Ma, Aibin
author_facet Xu, Bingqian
Sun, Jiapeng
Yang, Zhenquan
Han, Jing
Song, Dan
Jiang, Jinghua
Ma, Aibin
author_sort Xu, Bingqian
collection PubMed
description The microstructure design based on the development of heterostructure provides a new way for high strength and ductility Mg alloys. However, the wear property, as an important service performance, of Mg alloys with heterostructure is scarcely investigated. In this work, a high strength and ductility AZ91 Mg alloy with multiheterostructure was prepared via a processing route combined industrial-scale equal channel angular pressing (ECAP) and aging. The multiheterostructure consists of the heterogeneous grain structure and heterogeneous precipitates. The dry sliding wear behavior of this multiheterostructured (MH) alloy is investigated compared to the as-cast alloy. The impacts of the applied load and duration time on the wear volume and coefficient of friction (COF) are analyzed, and the wear mechanism is further discussed. The result indicates that although the MH alloy exhibits high-desirable strength-ductility synergy, it shows a poorer wear resistance but a relatively lower COF compared to the as-cast alloy at the present condition. The wear mechanism of both alloys mainly involves abrasive wear, as well as mild adhesion, delamination, and oxidation. In comparison, the MH alloy shows relatively severe adhesion, delamination, and oxidation. The poor wear resistance of the MH alloy at the present dry sliding wear condition is linked to the abundant grain boundaries and fine precipitates. Therefore, one should reasonably use the MH Mg alloy considering the service conditions to seek advantages and avoid disadvantages.
format Online
Article
Text
id pubmed-7368236
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Hindawi
record_format MEDLINE/PubMed
spelling pubmed-73682362020-07-28 Wear Behavior of the Multiheterostructured AZ91 Mg Alloy Prepared by ECAP and Aging Xu, Bingqian Sun, Jiapeng Yang, Zhenquan Han, Jing Song, Dan Jiang, Jinghua Ma, Aibin Scanning Research Article The microstructure design based on the development of heterostructure provides a new way for high strength and ductility Mg alloys. However, the wear property, as an important service performance, of Mg alloys with heterostructure is scarcely investigated. In this work, a high strength and ductility AZ91 Mg alloy with multiheterostructure was prepared via a processing route combined industrial-scale equal channel angular pressing (ECAP) and aging. The multiheterostructure consists of the heterogeneous grain structure and heterogeneous precipitates. The dry sliding wear behavior of this multiheterostructured (MH) alloy is investigated compared to the as-cast alloy. The impacts of the applied load and duration time on the wear volume and coefficient of friction (COF) are analyzed, and the wear mechanism is further discussed. The result indicates that although the MH alloy exhibits high-desirable strength-ductility synergy, it shows a poorer wear resistance but a relatively lower COF compared to the as-cast alloy at the present condition. The wear mechanism of both alloys mainly involves abrasive wear, as well as mild adhesion, delamination, and oxidation. In comparison, the MH alloy shows relatively severe adhesion, delamination, and oxidation. The poor wear resistance of the MH alloy at the present dry sliding wear condition is linked to the abundant grain boundaries and fine precipitates. Therefore, one should reasonably use the MH Mg alloy considering the service conditions to seek advantages and avoid disadvantages. Hindawi 2020-07-08 /pmc/articles/PMC7368236/ /pubmed/32728405 http://dx.doi.org/10.1155/2020/4873286 Text en Copyright © 2020 Bingqian Xu et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Xu, Bingqian
Sun, Jiapeng
Yang, Zhenquan
Han, Jing
Song, Dan
Jiang, Jinghua
Ma, Aibin
Wear Behavior of the Multiheterostructured AZ91 Mg Alloy Prepared by ECAP and Aging
title Wear Behavior of the Multiheterostructured AZ91 Mg Alloy Prepared by ECAP and Aging
title_full Wear Behavior of the Multiheterostructured AZ91 Mg Alloy Prepared by ECAP and Aging
title_fullStr Wear Behavior of the Multiheterostructured AZ91 Mg Alloy Prepared by ECAP and Aging
title_full_unstemmed Wear Behavior of the Multiheterostructured AZ91 Mg Alloy Prepared by ECAP and Aging
title_short Wear Behavior of the Multiheterostructured AZ91 Mg Alloy Prepared by ECAP and Aging
title_sort wear behavior of the multiheterostructured az91 mg alloy prepared by ecap and aging
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7368236/
https://www.ncbi.nlm.nih.gov/pubmed/32728405
http://dx.doi.org/10.1155/2020/4873286
work_keys_str_mv AT xubingqian wearbehaviorofthemultiheterostructuredaz91mgalloypreparedbyecapandaging
AT sunjiapeng wearbehaviorofthemultiheterostructuredaz91mgalloypreparedbyecapandaging
AT yangzhenquan wearbehaviorofthemultiheterostructuredaz91mgalloypreparedbyecapandaging
AT hanjing wearbehaviorofthemultiheterostructuredaz91mgalloypreparedbyecapandaging
AT songdan wearbehaviorofthemultiheterostructuredaz91mgalloypreparedbyecapandaging
AT jiangjinghua wearbehaviorofthemultiheterostructuredaz91mgalloypreparedbyecapandaging
AT maaibin wearbehaviorofthemultiheterostructuredaz91mgalloypreparedbyecapandaging