Cargando…

An Investigation on the Microstructure and Texture of an AZ80 Cup-Shaped Piece Processed by Rotating Backward Extrusion

The rotating backward extrusion (RBE) process, as a new severe plastic deformation (SPD) process, is based on conventional backward extrusion and rotation, which meets the requirement of modern industrial development with its high performance and production efficiency. However, there is little resea...

Descripción completa

Detalles Bibliográficos
Autores principales: Che, Xin, Dong, Beibei, Liu, Kai, Wang, Qiang, Meng, Mu, Gao, Zhi, Ma, Jin, Yang, Fulai, Zhang, Zhimin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7504135/
https://www.ncbi.nlm.nih.gov/pubmed/32825497
http://dx.doi.org/10.3390/ma13173690
_version_ 1783584554655678464
author Che, Xin
Dong, Beibei
Liu, Kai
Wang, Qiang
Meng, Mu
Gao, Zhi
Ma, Jin
Yang, Fulai
Zhang, Zhimin
author_facet Che, Xin
Dong, Beibei
Liu, Kai
Wang, Qiang
Meng, Mu
Gao, Zhi
Ma, Jin
Yang, Fulai
Zhang, Zhimin
author_sort Che, Xin
collection PubMed
description The rotating backward extrusion (RBE) process, as a new severe plastic deformation (SPD) process, is based on conventional backward extrusion and rotation, which meets the requirement of modern industrial development with its high performance and production efficiency. However, there is little research on the microstructure evolution and texture modification of the RBE process. Thus, in this study, the effect of different rotating revolutions, e.g., n = 5, n = 10, and n = 50, on the microstructure and texture development for the RBE process based on the AZ80 magnesium (Mg) alloy were investigated at 653 K. The results disclose that the rotating revolution is an influencing processing parameter on the deformation of the RBE process. The grain refining ability is enhanced with the increase of the rotating revolutions, and the minimum grain size of the cup bottom, shearing zone, and cup wall can reach to 16.7 μm, 15.6 μm, and 13.0 μm, respectively, under the condition of n = 50. Furthermore, with the increase in the rotating revolutions, the microstructure of the alloy becomes more uniform and the proportion of dynamic recrystallization (DRX) is also increased. The maximum DRX fractions of the sample for the cup bottom and cup wall are 95.4% and 86.8%, respectively, at n = 50. The DRX mechanism of the RBE process is determined by the continuous DRX and discontinuous DRX. In addition, the texture can be significant weakened during the RBE process, especially at the cup bottom, where the maximum pole intensity can be reduced from 17.6 at n = 10 to 6.5 at n = 50, which can be attributed to the higher proportion of new DRXed grains whose orientations are more random compared with the deformed grains.
format Online
Article
Text
id pubmed-7504135
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-75041352020-09-24 An Investigation on the Microstructure and Texture of an AZ80 Cup-Shaped Piece Processed by Rotating Backward Extrusion Che, Xin Dong, Beibei Liu, Kai Wang, Qiang Meng, Mu Gao, Zhi Ma, Jin Yang, Fulai Zhang, Zhimin Materials (Basel) Article The rotating backward extrusion (RBE) process, as a new severe plastic deformation (SPD) process, is based on conventional backward extrusion and rotation, which meets the requirement of modern industrial development with its high performance and production efficiency. However, there is little research on the microstructure evolution and texture modification of the RBE process. Thus, in this study, the effect of different rotating revolutions, e.g., n = 5, n = 10, and n = 50, on the microstructure and texture development for the RBE process based on the AZ80 magnesium (Mg) alloy were investigated at 653 K. The results disclose that the rotating revolution is an influencing processing parameter on the deformation of the RBE process. The grain refining ability is enhanced with the increase of the rotating revolutions, and the minimum grain size of the cup bottom, shearing zone, and cup wall can reach to 16.7 μm, 15.6 μm, and 13.0 μm, respectively, under the condition of n = 50. Furthermore, with the increase in the rotating revolutions, the microstructure of the alloy becomes more uniform and the proportion of dynamic recrystallization (DRX) is also increased. The maximum DRX fractions of the sample for the cup bottom and cup wall are 95.4% and 86.8%, respectively, at n = 50. The DRX mechanism of the RBE process is determined by the continuous DRX and discontinuous DRX. In addition, the texture can be significant weakened during the RBE process, especially at the cup bottom, where the maximum pole intensity can be reduced from 17.6 at n = 10 to 6.5 at n = 50, which can be attributed to the higher proportion of new DRXed grains whose orientations are more random compared with the deformed grains. MDPI 2020-08-20 /pmc/articles/PMC7504135/ /pubmed/32825497 http://dx.doi.org/10.3390/ma13173690 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Che, Xin
Dong, Beibei
Liu, Kai
Wang, Qiang
Meng, Mu
Gao, Zhi
Ma, Jin
Yang, Fulai
Zhang, Zhimin
An Investigation on the Microstructure and Texture of an AZ80 Cup-Shaped Piece Processed by Rotating Backward Extrusion
title An Investigation on the Microstructure and Texture of an AZ80 Cup-Shaped Piece Processed by Rotating Backward Extrusion
title_full An Investigation on the Microstructure and Texture of an AZ80 Cup-Shaped Piece Processed by Rotating Backward Extrusion
title_fullStr An Investigation on the Microstructure and Texture of an AZ80 Cup-Shaped Piece Processed by Rotating Backward Extrusion
title_full_unstemmed An Investigation on the Microstructure and Texture of an AZ80 Cup-Shaped Piece Processed by Rotating Backward Extrusion
title_short An Investigation on the Microstructure and Texture of an AZ80 Cup-Shaped Piece Processed by Rotating Backward Extrusion
title_sort investigation on the microstructure and texture of an az80 cup-shaped piece processed by rotating backward extrusion
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7504135/
https://www.ncbi.nlm.nih.gov/pubmed/32825497
http://dx.doi.org/10.3390/ma13173690
work_keys_str_mv AT chexin aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT dongbeibei aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT liukai aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT wangqiang aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT mengmu aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT gaozhi aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT majin aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT yangfulai aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT zhangzhimin aninvestigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT chexin investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT dongbeibei investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT liukai investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT wangqiang investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT mengmu investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT gaozhi investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT majin investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT yangfulai investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion
AT zhangzhimin investigationonthemicrostructureandtextureofanaz80cupshapedpieceprocessedbyrotatingbackwardextrusion