Evolution of microstructure and mechanical properties of AZ31 Mg alloy sheets processed by accumulated extrusion bonding with different relative orientation

2019 ◽  
Vol 784 ◽  
pp. 584-591 ◽  
Author(s):  
Tingzhuang Han ◽  
Guangsheng Huang ◽  
Lifeng Ma ◽  
Guangang Wang ◽  
Lifei Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Relative Orientation ◽  
Mg Alloy ◽  
Microstructure And Mechanical Properties ◽  
Az31 Mg Alloy ◽  
Evolution Of Microstructure

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 Rolling Conditions on Microstructure and Mechanical Properties of AZ31 Mg Alloy

2005 ◽  
Vol 475-479 ◽  
pp. 529-532
Author(s):  
Tae Kwon Ha ◽  
Hwan Jin Sung ◽  
Woo Jin Park ◽  
Sang Ho Ahn
Keyword(s):  
Mechanical Properties ◽  
Uniform Elongation ◽  
Warm Rolling ◽  
Thickness Reduction ◽  
Mg Alloy ◽  
Roll Speed ◽  
Single Pass ◽  
Microstructure And Mechanical Properties ◽  
Roll Temperature ◽  
Az31 Mg Alloy

The effect of warm rolling under various conditions on the microstructure and mechanical property was investigated using an AZ31 Mg alloy sheet. Several processing parameters such as initial thickness, thickness reduction by a single pass rolling, rolling temperature, roll speed, and roll temperature were varied to elicit an optimum condition for the warm rolling process of AZ31 Mg alloy. Microstructure and mechanical properties were measured for specimens subjected to rolling experiments of various conditions. Warm rolling of 30% thickness reduction per pass was possible without any side-crack at temperatures as low as 200oC under the roll speed of 30 m/min. The initial microstructure before rolling was the mixed one consisting of partially recrystallized and cast structures. Grain refinement was found to occur actively during the warm rolling, producing a very fine grain size of 7 µm after 50% reduction in single pass rolling at 200oC. Yield strength of 204MPa, tensile strength of 330MPa and uniform elongation of 32% have been obtained in warm rolled sheets.

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.

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