Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

, volume 705 , pages 402-410

Effect of heat treatment on tensile properties, impact toughness and plane-strain fracture toughness of sand-cast Mg-6Gd-3Y-0.5Zr magnesium alloy

Quan Wang ¹

Xiao Lv ²

Wencai Liu ¹

Haohao Zhang ¹

Wendong Cui ¹

Zhongquan Li ²

Guohua Wu ¹

Hide authors affiliations Show authors affiliations: 2 affiliations

National Engineering Research Center of Light Alloy Net Forming & State Key Laboratory of Metal Matrix Composite, School of Materials Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China |

Shanghai Aviation Precision Machinery Research Institute, Shanghai 201600, China |

Publication type: Journal Article

Publication date: 2017-09-01

Elsevier

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

scimago Q1

wos Q1

SJR: 1.955

CiteScore: 12.7

Impact factor: 7.0

ISSN: 09215093, 18734936

DOI: 10.1016/j.msea.2017.08.100

Copy DOI

Condensed Matter Physics

General Materials Science

Mechanical Engineering

Mechanics of Materials

Abstract

The tensile properties, impact toughness and plane-strain fracture toughness of sand-cast Mg-6Gd-3Y-0.5Zr magnesium alloy were studied in different thermal conditions, including as-cast, as-quenched and isothermal aging states. The results show that optimum heat treatment is solutionized at 490 ℃ for 12 h, and then aged at 212 ℃ for 100 h. Tensile test exhibits that as-quenched GW63 alloy shows high elongation but low tensile strength, nevertheless, aged alloy shows higher strength but worse ductility. Impact values of GW63 alloy are 34.6, 50.9 and 20.3 J/cm 2 in the as-cast, as-quenched and aged states, respectively. Room temperature impact toughness is more closely related to material ductility than strength for the studied alloy. The plane-strain fracture toughness values of the as-cast, as-quenched and aged alloy are 16.2, 17.7 and 19.5 MPa m½, respectively, i.e., the improvement of 20.4% has been achieved by aging precipitation strengthening in contrast with slight improvement of 9.3% by solid solution strengthening. In addition, fractured characteristics after impact and fracture toughness tests were also investigated by fracture analysis.

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Wang Q. et al. Effect of heat treatment on tensile properties, impact toughness and plane-strain fracture toughness of sand-cast Mg-6Gd-3Y-0.5Zr magnesium alloy // Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing. 2017. Vol. 705. pp. 402-410.

GOST all authors (up to 50) Copy

Wang Q., Lv X., Liu W., Zhang H., Cui W., Li Z., Wu G. Effect of heat treatment on tensile properties, impact toughness and plane-strain fracture toughness of sand-cast Mg-6Gd-3Y-0.5Zr magnesium alloy // Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing. 2017. Vol. 705. pp. 402-410.

RIS |

Cite this

RIS Copy

TY - JOUR

DO - 10.1016/j.msea.2017.08.100

UR - https://doi.org/10.1016/j.msea.2017.08.100

TI - Effect of heat treatment on tensile properties, impact toughness and plane-strain fracture toughness of sand-cast Mg-6Gd-3Y-0.5Zr magnesium alloy

T2 - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

AU - Wang, Quan

AU - Lv, Xiao

AU - Liu, Wencai

AU - Zhang, Haohao

AU - Cui, Wendong

AU - Li, Zhongquan

AU - Wu, Guohua

PY - 2017

DA - 2017/09/01

PB - Elsevier

SP - 402-410

VL - 705

SN - 0921-5093

SN - 1873-4936

ER -

BibTex

Cite this

BibTex (up to 50 authors) Copy

@article{2017_Wang,

author = {Quan Wang and Xiao Lv and Wencai Liu and Haohao Zhang and Wendong Cui and Zhongquan Li and Guohua Wu},

title = {Effect of heat treatment on tensile properties, impact toughness and plane-strain fracture toughness of sand-cast Mg-6Gd-3Y-0.5Zr magnesium alloy},

journal = {Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing},

year = {2017},

volume = {705},

publisher = {Elsevier},

month = {sep},

url = {https://doi.org/10.1016/j.msea.2017.08.100},

pages = {402--410},

doi = {10.1016/j.msea.2017.08.100}

}

Publisher

Elsevier

Journal

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

scimago Q1

wos Q1

SJR

1.955

CiteScore

12.7

Impact factor

7.0

ISSN

09215093 (Print)

18734936