Evolution of Microstructure and Mechanical Properties of ZK80 Mg Alloy during Net-Shape Pressing of Extruded Perform

2016 ◽  
Vol 849 ◽  
pp. 142-147
Author(s):  
Feng Hong Cao ◽  
Yun Gui Chen ◽  
Si Yuan Long
Keyword(s):  
Mechanical Properties ◽  
Ductile Fracture ◽  
Mg Alloy ◽  
Fracture Characteristics ◽  
Microstructure And Mechanical Properties ◽  
Die Pressing ◽  
Noticeable Improvement ◽  
Net Shape Forming ◽  
Mixed Fracture ◽  
Evolution Of Microstructure

The microstructure and mechanical properties of as-cast ZK80 Mg alloy during net-shape forming of tensile specimens with close-die pressing extrusion, and the effect of extrusion-forging on the fracture mechanism of ZK80 alloys were studied in the present investigation. The results indicated that Rm (σb)、Re (σs) and A(δ) of compound forming ZK80 Mg alloy had noticeable improvement. Large deformation and produce twins, lead to grain refinement and had strongly influence on mechanical property of ZK80 Mg alloy, as well as strong affected the mechanical properties of the alloy. It was found that as-cast ZK80 Mg alloy has mixed fracture characteristics including cleavage fracture, intergranular facture and ductile fracture. As-extruded perform and as-close die ZK80 Mg alloys were obvious dimples for ductile fracture pore nucleation mechanism.

Effect of Heat Treatment on Microstructure and Mechanical Properties of As-Forged ZYK530 Mg Alloy

2020 ◽  
Vol 984 ◽  
pp. 11-19
Author(s):  
Feng Hong Cao ◽  
Chen Chang ◽  
Yao Hui Xu
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aging Process ◽  
Mg Alloy ◽  
Maximum Hardness ◽  
Treatment Processes ◽  
Microstructure And Mechanical Properties ◽  
Different Temperatures ◽  
Mixed Fracture ◽  
Peak Value

In the paper, the microstructure and mechanical properties of ZYK530 Mg alloy with different aging heat treatment processes were analyzed and studied by OM, SEM, EDS and XRD. The results show that after heat treatment at different temperatures and aging times, the hardness of the alloy first decreases, then increases in a wave-like manner, and then decreases in a wave-like manner after reaching its peak value. The optimum aging process of ZYK530 alloy is T5-220°C×5h, and the maximum hardness is 88.34HRE, which tensile strength, yield strength and elongation are 335MPa, 305MPa and 13.5% respectively. Compared with the untreated forged alloy, the mechanical properties are increased by 6.3%, 4.8% and 35%, which its fracture mechanism is mainly ductile-brittle mixed fracture.

Microstructure and mechanical properties of AZ31 Mg alloy produced by a new compound extrusion technique

2018 ◽  
Vol 60 (10) ◽  
pp. 1021-1025 ◽  
Author(s):  
Liwei Lu ◽  
Zhenru Yin ◽  
Jun Zhao ◽  
Dongfeng Shi ◽  
Chuming Li
Keyword(s):  
Mechanical Properties ◽  
Mg Alloy ◽  
Microstructure And Mechanical Properties ◽  
Az31 Mg Alloy

Effect of post-heat treatment on microstructure and mechanical properties of laser welded Al-Cu-Mg alloy

2021 ◽  
Vol 64 ◽  
pp. 620-632
Author(s):  
Alexander Malikov ◽  
Anatoly Orishich ◽  
Igor Vitoshkin ◽  
Evgeniy Karpov ◽  
Alexei Ancharov
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Mg Alloy ◽  
Post Heat Treatment ◽  
Microstructure And Mechanical Properties
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