scholarly journals Effect of Grain Refinement on Fracture Toughness and Fracture Mechanism in AZ31 Magnesium Alloy

2014 ◽  
Vol 3 ◽  
pp. 1780-1785 ◽  
Author(s):  
Yu Xia ◽  
Li Yulong ◽  
Li Li
Keyword(s):  
Fracture Toughness ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Fracture Mechanism ◽  
Az31 Magnesium Alloy

The influence of gadolinium on Al–Ti–C master alloy and its refining effect on AZ31 magnesium alloy

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Wenxue Fan ◽  
Hai Hao
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Magnesium Alloys ◽  
Master Alloy ◽  
Cast Alloy ◽  
Az31 Magnesium Alloy ◽  
Synthesis Mechanism ◽  
Refining Effect ◽  
Master Alloys

Abstract Grain refinement has a significant influence on the improvement of mechanical properties of magnesium alloys. In this study, a series of Al–Ti–C-xGd (x = 0, 1, 2, 3) master alloys as grain refiners were prepared by self-propagating high-temperature synthesis. The synthesis mechanism of the Al–Ti–C-xGd master alloy was analyzed. The effects of Al–Ti–C-xGd master alloys on the grain refinement and mechanical properties of AZ31 (Mg-3Al-1Zn-0.4Mn) magnesium alloys were investigated. The results show that the microstructure of the Al–Ti–C-xGd alloy contains α-Al, TiAl3, TiC and the core–shell structure TiAl3/Ti2Al20Gd. The refining effect of the prepared Al–Ti–C–Gd master alloy is obviously better than that of Al–Ti–C master alloy. The grain size of AZ31 magnesium alloy was reduced from 323 μm to 72 μm when adding 1 wt.% Al–Ti–C-2Gd master alloy. In the same condition, the ultimate tensile strength and elongation of as-cast alloy were increased from 130 MPa, 7.9% to 207 MPa, 16.6% respectively.

Effects of solutionized Al–10Sr master alloys on grain refinement of AZ31 magnesium alloy

2008 ◽  
Vol 461 (1-2) ◽  
pp. 298-303 ◽  
Author(s):  
Mingbo Yang ◽  
Fusheng Pan ◽  
Renju Cheng ◽  
Aitao Tang
Keyword(s):  
Magnesium Alloy ◽  
Grain Refinement ◽  
Az31 Magnesium Alloy ◽  
Master Alloys

Effect of Al2Ca intermetallic compound addition on grain refinement of AZ31 magnesium alloy

2016 ◽  
Vol 26 (5) ◽  
pp. 1284-1293 ◽  
Author(s):  
Zhong-tao JIANG ◽  
Bin JIANG ◽  
Jian-yue ZHANG ◽  
Jia-hong DAI ◽  
Qing-shan YANG ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Intermetallic Compound ◽  
Grain Refinement ◽  
Az31 Magnesium Alloy

Strength and Formability of Fine-Grained Laminated Magnesium Alloy

2013 ◽  
Vol 753 ◽  
pp. 465-468
Author(s):  
Masafumi Noda ◽  
Kunio Funami
Keyword(s):  
Fracture Toughness ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Surface Properties ◽  
Laminated Composite ◽  
Mg Alloy ◽  
Roll Bonding ◽  
Fine Grained ◽  
Solid Diffusion ◽  
Laminated Material

The development of laminated composite Mg alloy sheets, prepared by solid diffusion and roll bonding, is an effective way of improving the stiffness and surface properties of these materials while retaining their lightness. Laminated composites consisting of a core of Mg alloy between sheets of A5083 alloy as the coating material with Ti foil interlayers were prepared by solid diffusion and roll bonding. The laminated material had a strength and was resistant to cracking during deformation. Compounds that were formed and dispersed at the bonding interface between the Al and Mg alloys subjected to grain refinement improved the fracture toughness and strength of the composites, and it was important that these compounds were formed discontinuously. The fracture toughness of the laminated composite was twice that of the base Mg alloy, and its Young's modulus was 57 GPa.

302 Plastic formability of an AZ31 magnesium alloy subjected to a grain refinement

2005 ◽  
Vol 2005 (0) ◽  
pp. 45-46
Author(s):  
Yusuke OTA ◽  
Takuya HANADA ◽  
Goroh ITOH ◽  
Yoshinobu MOTOHASHI
Keyword(s):  
Magnesium Alloy ◽  
Grain Refinement ◽  
Az31 Magnesium Alloy

Influence of number of ECAP passes on microstructure and mechanical properties of AZ31 magnesium alloy

2012 ◽  
Vol 57 (3) ◽  
pp. 711-717 ◽  
Author(s):  
K. Bryła ◽  
J. Dutkiewicz ◽  
L. Litynska-Dobrzynska ◽  
L.L. Rokhlin ◽  
P. Kurtyka
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Vickers Microhardness ◽  
Az31 Alloy ◽  
Az31 Magnesium Alloy ◽  
Angular Pressing ◽  
Microstructure And Mechanical Properties ◽  
Transmission Electron

The aim of this work was to investigate the influence of the number of equal channel angular pressing (ECAP) passes on the microstructure and mechanical properties of AZ31 magnesium alloy. The microstructure after two and four passes of ECAP at 423 and 523 K was investigated by means of optical and transmission electron microscopy. The mechanical properties were carried out using Vickers microhardness measurements and compression test. The grain refinement in AZ31 alloy was obtained using ECAP routes down to 1,5 μm at 423 K. Processes of dynamic recrystallization during ECAP were observed. It was found that a gradual decrease of grain size occurs with the increasing of number of ECAP passes. The grain refinement increases mechanical properties at ambient temperature, such as Vickers microhardness and compression strength proportionally to d-0.5.

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