Effects of Extrusion and Rolling Processes on the Microstructure and Mechanical Properties of Zn-Li-Ag Alloys

Lu, Yujiao; Liu, Ying; Dai, Yilong; Yan, Yang; Yu, Kun

doi:10.3390/met12030520

Open AccessArticle

Effects of Extrusion and Rolling Processes on the Microstructure and Mechanical Properties of Zn-Li-Ag Alloys

by

Yujiao Lu

^1,2,

Ying Liu

¹,

Yilong Dai

^1,3,*

,

Yang Yan

¹ and

Kun Yu

^1,2,*

¹

School of Material Science and Engineering, Central South University, Changsha 410083, China

²

The Third Xiangya Hospital, Central South University, Changsha 410013, China

³

School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China

^*

Authors to whom correspondence should be addressed.

Metals 2022, 12(3), 520; https://doi.org/10.3390/met12030520

Submission received: 17 February 2022 / Revised: 7 March 2022 / Accepted: 16 March 2022 / Published: 18 March 2022

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Abstract

In this work, a novel Zn-0.5%Li-0.1%Ag alloy was cast and extruded into rods, which were rolled into a plate, and the effects of extrusion and rolling on the microstructure and mechanical properties of the Zn-0.5%Li-0.1%Ag alloy were evaluated. The results show that grain strengthening occurs in all of the alloys because of the presence of nano-LiZn₄ precipitates. The extrusion and rolling processes promote grain size refinement and orientation order, and the microstructure and mechanical properties of the Zn-0.5%Li-0.1%Ag alloy can be significantly improved by secondary processing. The elastic modulus and tensile strength of the processed alloy increased to 83.1 GPa and 251.6 MPa, respectively, compared to 75.6 GPa and 185.8 MPa, respectively, for the as-cast Zn-0.5%Li-0.1%Ag alloy. More importantly, elongation was greatly improved, from 16.9% to 92.6%, which is an increase of up to 448%, and there were transgranular cleavage planes and intergranular cleavage planes in the fracture surfaces. The intergranular cleavage planes were dominant, and they showed ductile fracture characteristics.

Keywords: Zn-0.5%Li-0.1%Ag alloy; extrusion and rolling processes; microstructure; elastic modulus; tensile strength; elongation

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MDPI and ACS Style

Lu, Y.; Liu, Y.; Dai, Y.; Yan, Y.; Yu, K. Effects of Extrusion and Rolling Processes on the Microstructure and Mechanical Properties of Zn-Li-Ag Alloys. Metals 2022, 12, 520. https://doi.org/10.3390/met12030520

AMA Style

Lu Y, Liu Y, Dai Y, Yan Y, Yu K. Effects of Extrusion and Rolling Processes on the Microstructure and Mechanical Properties of Zn-Li-Ag Alloys. Metals. 2022; 12(3):520. https://doi.org/10.3390/met12030520

Chicago/Turabian Style

Lu, Yujiao, Ying Liu, Yilong Dai, Yang Yan, and Kun Yu. 2022. "Effects of Extrusion and Rolling Processes on the Microstructure and Mechanical Properties of Zn-Li-Ag Alloys" Metals 12, no. 3: 520. https://doi.org/10.3390/met12030520

APA Style

Lu, Y., Liu, Y., Dai, Y., Yan, Y., & Yu, K. (2022). Effects of Extrusion and Rolling Processes on the Microstructure and Mechanical Properties of Zn-Li-Ag Alloys. Metals, 12(3), 520. https://doi.org/10.3390/met12030520

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Effects of Extrusion and Rolling Processes on the Microstructure and Mechanical Properties of Zn-Li-Ag Alloys

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