The Effect of Thermomechanical Treatment on the Mechanical Behavior of Mg-Al-Zn Alloys

2005 ◽  
pp. 559-562
Author(s):  
Keun Yong Sohn ◽  
Ryeo Sun Ha ◽  
Min Cheol Kang ◽  
Kyung Hyun Kim
Keyword(s):  
Mechanical Behavior ◽  
Thermomechanical Treatment ◽  
Zn Alloys

The Effect of Thermomechanical Treatment on the Mechanical Behavior of Mg-Al-Zn Alloys

2005 ◽  
Vol 488-489 ◽  
pp. 559-562
Author(s):  
Keun Yong Sohn ◽  
Ryeo Sun Ha ◽  
Min Cheol Kang ◽  
Kyung Hyun Kim
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Mechanical Behavior ◽  
Thermomechanical Treatment ◽  
Solution Treatment ◽  
Al Alloys ◽  
Gas Mixture ◽  
Zn Alloys

In this study, the effect of thermomechanical treatment (TMT) on the aging and mechanical behavior of Mg-Al-Zn alloys has been investigated. Three Mg-Al alloys AZ31, AZ61, and AZ91 were mold cast into a block under a CO2 and SF6 gas mixture atmosphere. The cast specimens were hot-swaged to a rod after homogenizing treatment at 400°C for 4 hours. The prestrain was applied by cold swaging up to 10% RA after solution treatment. From the aging curves obtained at 150°C, it was identified that the hardness of TMT-processed AZ31 and AZ61 did not increase during aging, while that of AZ91 remarkably increased. The tensile strength and elongation of the TMT-processed AZ31 and AZ61 remarkably increased depending on the amount of applied prestrains, indicating the introduction of dislocations prior to aging significantly improved the mechanical properties.

Elevated Temperature Mechanical Behavior of Mg-Y-Zn Alloys

2007 ◽  
Vol 546-549 ◽  
pp. 237-240 ◽  
Author(s):  
Bin Chen ◽  
Dong Liang Lin ◽  
Xiao Qin Zeng ◽  
Chen Lu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elevated Temperature ◽  
Ultimate Tensile Strength ◽  
Ambient Temperature ◽  
Mechanical Behavior ◽  
Gradual Increase ◽  
Yttrium Content ◽  
Zn Alloy ◽  
Zn Alloys

The elevated temperature mechanical behavior of Mg-Y-Zn alloys was investigated. It was found that the extruded Mg-Y-Zn alloy exhibited excellent mechanical properties both at ambient temperature and elevated temperature. With the increase of tensile temperature, the ultimate tensile strengths of Mg-Y-Zn alloys decreased and their elongations increased. The ultimate tensile strengths increased and elongations decreased with the increase of yttrium content. However, a gradual increase in the ultimate tensile strength and elongation both at ambient temperature and elevated temperature was obtained by increasing both yttrium and zinc contents. The fracture modes of Mg-Y-Zn alloys at different tensile temperature were also investigated.

Microstructure and mechanical behavior of Mg–Y–Zn alloys with respect to varying content of LPSO phase

2018 ◽  
Vol 109 (10) ◽  
pp. 944-950
Author(s):  
Yan-ping Guo ◽  
Ya-ning Wang ◽  
Min-gang Zhang ◽  
Yue-zhong Zhang ◽  
Da-qing Fang ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Lpso Phase ◽  
Zn Alloys

Modeling of the mechanical behavior and texture evolution in Zn alloys during reverse shear loading

2015 ◽  
Vol 224 ◽  
pp. 143-148 ◽  
Author(s):  
Marina Borodachenkova ◽  
Wei Wen ◽  
Frédéric Barlat ◽  
António Pereira ◽  
José Grácio
Keyword(s):  
Mechanical Behavior ◽  
Texture Evolution ◽  
Shear Loading ◽  
Zn Alloys

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Thermomechanical Treatment of a 4340 Ni-Cr-Mo Alloy Steel

1981 ◽  
Vol 39 ◽  
pp. 314-315 ◽  
Author(s):  
M.T. Jahn ◽  
J.C. Yang ◽  
C.M. Wan
Keyword(s):  
Mechanical Property ◽  
Chemical Composition ◽  
Alloy Steel ◽  
Thermomechanical Treatment ◽  
Room Temperature ◽  
Good Combination ◽  
Thermal Treatments ◽  
Low Carbon ◽  
4340 Steel ◽  
Good Improvement

4340 Ni-Cr-Mo alloy steel is widely used due to its good combination of strength and toughness. The mechanical property of 4340 steel can be improved by various thermal treatments. The influence of thermomechanical treatment (TMT) has been studied in a low carbon Ni-Cr-Mo steel having chemical composition closed to 4340 steel. TMT of 4340 steel is rarely examined up to now. In this study we obtain good improvement on the mechanical property of 4340 steel by TMT. The mechanism is explained in terms of TEM microstructures4340 (0.39C-1.81Ni-0.93Cr-0.26Mo) steel was austenitized at 950°C for 30 minutes. The TMTed specimen (T) was obtained by forging the specimen continuously as the temperature of the specimen was decreasing from 950°C to 600°C followed by oil quenching to room temperature. The thickness reduction ratio by forging is 40%. The conventional specimen (C) was obtained by quenching the specimen directly into room temperature oil after austenitized at 950°C for 30 minutes. All quenched specimens (T and C) were then tempered at 450, 500, 550, 600 or 650°C for four hours respectively.

Sign in / Sign up

Export Citation Format

Share Document