Multidirectional forging of AZ91 magnesium alloy and its effects on microstructures and mechanical properties

K. B. Nie; K. K. Deng; X. J. Wang; F. J. Xu; K. Wu; M. Y. Zheng

doi:10.1016/j.msea.2014.11.076

Multidirectional forging of AZ91 magnesium alloy and its effects on microstructures and mechanical properties

K. B. Nie^*
, K. K. Deng
, X. J. Wang
, F. J. Xu
, K. Wu
, M. Y. Zheng

^*Corresponding author for this work

Taiyuan University of Technology
Harbin Institute of Technology

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

81 Scopus citations

Abstract

AZ91 alloy was subjected to multidirectional forging (MDF) and the relationship between microstructures and mechanical properties generated by MDF were investigated. The results showed that after 1 MDF pass grain size of the alloy decreased compared with as-cast alloy, and the amount of recrystallization grains increased when the MDF temperature increased from 250°C to 400°C. With increasing the MDF passes at 350°C, grains of the alloy were gradually refined. A typical basal texture was obtained after 1 MDF pass, and then the basal pole scattered with the increase of MDF passes. Mg₁₇Al₁₂ phases were precipitated along grain boundaries during MDF, which could hinder the growth of recrystallization grains. Both tensile strength and elongation to failure of the alloy were significantly enhanced till 3 MDF passes with increasing the MDF passes.

Original language	English
Pages (from-to)	157-168
Number of pages	12
Journal	Materials Science and Engineering: A
Volume	624
DOIs	https://doi.org/10.1016/j.msea.2014.11.076
State	Published - 9 Jan 2015
Externally published	Yes

Keywords

AZ91 alloy
Mechanical properties
Microstructure
Multidirectional forging

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10.1016/j.msea.2014.11.076

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title = "Multidirectional forging of AZ91 magnesium alloy and its effects on microstructures and mechanical properties",

abstract = "AZ91 alloy was subjected to multidirectional forging (MDF) and the relationship between microstructures and mechanical properties generated by MDF were investigated. The results showed that after 1 MDF pass grain size of the alloy decreased compared with as-cast alloy, and the amount of recrystallization grains increased when the MDF temperature increased from 250°C to 400°C. With increasing the MDF passes at 350°C, grains of the alloy were gradually refined. A typical basal texture was obtained after 1 MDF pass, and then the basal pole scattered with the increase of MDF passes. Mg17Al12 phases were precipitated along grain boundaries during MDF, which could hinder the growth of recrystallization grains. Both tensile strength and elongation to failure of the alloy were significantly enhanced till 3 MDF passes with increasing the MDF passes.",

keywords = "AZ91 alloy, Mechanical properties, Microstructure, Multidirectional forging",

author = "Nie, \{K. B.\} and Deng, \{K. K.\} and Wang, \{X. J.\} and Xu, \{F. J.\} and K. Wu and Zheng, \{M. Y.\}",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier B.V.",

year = "2015",

month = jan,

day = "9",

doi = "10.1016/j.msea.2014.11.076",

language = "英语",

volume = "624",

pages = "157--168",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Multidirectional forging of AZ91 magnesium alloy and its effects on microstructures and mechanical properties

AU - Nie, K. B.

AU - Deng, K. K.

AU - Wang, X. J.

AU - Xu, F. J.

AU - Wu, K.

AU - Zheng, M. Y.

PY - 2015/1/9

Y1 - 2015/1/9

N2 - AZ91 alloy was subjected to multidirectional forging (MDF) and the relationship between microstructures and mechanical properties generated by MDF were investigated. The results showed that after 1 MDF pass grain size of the alloy decreased compared with as-cast alloy, and the amount of recrystallization grains increased when the MDF temperature increased from 250°C to 400°C. With increasing the MDF passes at 350°C, grains of the alloy were gradually refined. A typical basal texture was obtained after 1 MDF pass, and then the basal pole scattered with the increase of MDF passes. Mg17Al12 phases were precipitated along grain boundaries during MDF, which could hinder the growth of recrystallization grains. Both tensile strength and elongation to failure of the alloy were significantly enhanced till 3 MDF passes with increasing the MDF passes.

AB - AZ91 alloy was subjected to multidirectional forging (MDF) and the relationship between microstructures and mechanical properties generated by MDF were investigated. The results showed that after 1 MDF pass grain size of the alloy decreased compared with as-cast alloy, and the amount of recrystallization grains increased when the MDF temperature increased from 250°C to 400°C. With increasing the MDF passes at 350°C, grains of the alloy were gradually refined. A typical basal texture was obtained after 1 MDF pass, and then the basal pole scattered with the increase of MDF passes. Mg17Al12 phases were precipitated along grain boundaries during MDF, which could hinder the growth of recrystallization grains. Both tensile strength and elongation to failure of the alloy were significantly enhanced till 3 MDF passes with increasing the MDF passes.

KW - AZ91 alloy

KW - Mechanical properties

KW - Microstructure

KW - Multidirectional forging

UR - https://www.scopus.com/pages/publications/84916896547

U2 - 10.1016/j.msea.2014.11.076

DO - 10.1016/j.msea.2014.11.076

M3 - 文章

AN - SCOPUS:84916896547

SN - 0921-5093

VL - 624

SP - 157

EP - 168

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Multidirectional forging of AZ91 magnesium alloy and its effects on microstructures and mechanical properties

Abstract

Keywords

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