Repetitive upsetting extrusion process and microstructure evolution of AZ61 magnesium alloy

Y. Xu; L. Hu; Y. Sun; Q. Ma

doi:10.1179/1432891714Z.000000000661

Repetitive upsetting extrusion process and microstructure evolution of AZ61 magnesium alloy

Y. Xu
, L. Hu^*
, Y. Sun
, Q. Ma

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The rigid plastic finite element method was used to simulate the repetitive upsetting extrusion (RUE) process of an AZ61 magnesium alloy. Flow nets, field variables and the influence of initial blank temperature and RUE passes on the RUE process were analysed systematically. The results showed that large accumulated strain induced by multi-pass operation could be obtained by RUE process. The applied load versus displacement curves were obtained by RUE process test and the forming principle was revealed. Microstructure evolution during RUE process was demonstrated by microstructure observation, which revealed that the RUE strain induced process has a pronounced effect on grain refinement. Under the conditions of 340°C and 1 mm s^-1, the initial cast structure with average grain size of 95 μm evolved to fine and uniform DRX grains with average grain size of 6·9 μm after three RUE passes.

Original language	English
Pages (from-to)	S4173-S4177
Journal	Materials Research Innovations
Volume	18
DOIs	https://doi.org/10.1179/1432891714Z.000000000661
State	Published - 1 Jul 2014
Externally published	Yes

Keywords

AZ61 magnesium alloy
Field variables
Microstructure evolution
RUE process

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10.1179/1432891714Z.000000000661

Cite this

@article{128b911fa27d4601aa5449ba4a6a66e2,

title = "Repetitive upsetting extrusion process and microstructure evolution of AZ61 magnesium alloy",

abstract = "The rigid plastic finite element method was used to simulate the repetitive upsetting extrusion (RUE) process of an AZ61 magnesium alloy. Flow nets, field variables and the influence of initial blank temperature and RUE passes on the RUE process were analysed systematically. The results showed that large accumulated strain induced by multi-pass operation could be obtained by RUE process. The applied load versus displacement curves were obtained by RUE process test and the forming principle was revealed. Microstructure evolution during RUE process was demonstrated by microstructure observation, which revealed that the RUE strain induced process has a pronounced effect on grain refinement. Under the conditions of 340°C and 1 mm s-1, the initial cast structure with average grain size of 95 μm evolved to fine and uniform DRX grains with average grain size of 6·9 μm after three RUE passes.",

keywords = "AZ61 magnesium alloy, Field variables, Microstructure evolution, RUE process",

author = "Y. Xu and L. Hu and Y. Sun and Q. Ma",

note = "Publisher Copyright: {\textcopyright} W. S. Maney \& Son Ltd. 2014.",

year = "2014",

month = jul,

day = "1",

doi = "10.1179/1432891714Z.000000000661",

language = "英语",

volume = "18",

pages = "S4173--S4177",

journal = "Materials Research Innovations",

issn = "1432-8917",

publisher = "Maney Publishing",

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TY - JOUR

T1 - Repetitive upsetting extrusion process and microstructure evolution of AZ61 magnesium alloy

AU - Xu, Y.

AU - Hu, L.

AU - Sun, Y.

AU - Ma, Q.

N1 - Publisher Copyright: © W. S. Maney & Son Ltd. 2014.

PY - 2014/7/1

Y1 - 2014/7/1

N2 - The rigid plastic finite element method was used to simulate the repetitive upsetting extrusion (RUE) process of an AZ61 magnesium alloy. Flow nets, field variables and the influence of initial blank temperature and RUE passes on the RUE process were analysed systematically. The results showed that large accumulated strain induced by multi-pass operation could be obtained by RUE process. The applied load versus displacement curves were obtained by RUE process test and the forming principle was revealed. Microstructure evolution during RUE process was demonstrated by microstructure observation, which revealed that the RUE strain induced process has a pronounced effect on grain refinement. Under the conditions of 340°C and 1 mm s-1, the initial cast structure with average grain size of 95 μm evolved to fine and uniform DRX grains with average grain size of 6·9 μm after three RUE passes.

AB - The rigid plastic finite element method was used to simulate the repetitive upsetting extrusion (RUE) process of an AZ61 magnesium alloy. Flow nets, field variables and the influence of initial blank temperature and RUE passes on the RUE process were analysed systematically. The results showed that large accumulated strain induced by multi-pass operation could be obtained by RUE process. The applied load versus displacement curves were obtained by RUE process test and the forming principle was revealed. Microstructure evolution during RUE process was demonstrated by microstructure observation, which revealed that the RUE strain induced process has a pronounced effect on grain refinement. Under the conditions of 340°C and 1 mm s-1, the initial cast structure with average grain size of 95 μm evolved to fine and uniform DRX grains with average grain size of 6·9 μm after three RUE passes.

KW - AZ61 magnesium alloy

KW - Field variables

KW - Microstructure evolution

KW - RUE process

UR - https://www.scopus.com/pages/publications/84907855029

U2 - 10.1179/1432891714Z.000000000661

DO - 10.1179/1432891714Z.000000000661

M3 - 文章

AN - SCOPUS:84907855029

SN - 1432-8917

VL - 18

SP - S4173-S4177

JO - Materials Research Innovations

JF - Materials Research Innovations

ER -

Repetitive upsetting extrusion process and microstructure evolution of AZ61 magnesium alloy

Abstract

Keywords

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