scholarly journals The High-Temperature Deformation Mechanism in Al-Mg Alloys and the Internal Stress

1974 ◽  
Vol 38 (9) ◽  
pp. 826-834 ◽  
Author(s):  
Hideo Yoshinaga ◽  
Ken Toma ◽  
Shotaro Morozumi
Keyword(s):  
High Temperature ◽  
Internal Stress ◽  
Deformation Mechanism ◽  
Mg Alloys ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Al Mg Alloys

Cavitation during high-temperature deformation in Al–Mg alloys

2013 ◽  
Vol 61 (7) ◽  
pp. 2403-2413 ◽  
Author(s):  
Hiroyuki Toda ◽  
Zul Azri Bin Shamsudin ◽  
Kazuyuki Shimizu ◽  
Kentaro Uesugi ◽  
Akihisa Takeuchi ◽  
...  
Keyword(s):  
High Temperature ◽  
Mg Alloys ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Al Mg Alloys

scholarly journals MECHANISM OF HIGH-TEMPERATURE DEFORMATION IN Al-Mg ALLOYS

1965 ◽  
Vol 21 (9) ◽  
pp. 1681
Author(s):  
WANG CHI-MIN ◽  
WANG ZAI-FO ◽  
DOU CHUNG-WEI ◽  
KUO MOU-DUAN
Keyword(s):  
High Temperature ◽  
Mg Alloys ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Al Mg Alloys

High temperature deformation mechanism of 15CrODS ferritic steels at cold-rolled and recrystallized conditions

2015 ◽  
Vol 466 ◽  
pp. 653-657 ◽  
Author(s):  
Yoshito Sugino ◽  
Shigeharu Ukai ◽  
Naoko Oono ◽  
Shigenari Hayashi ◽  
Takeji Kaito ◽  
...  
Keyword(s):  
High Temperature ◽  
Deformation Mechanism ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Ferritic Steels ◽  
Cold Rolled

High Temperature Deformation Mechanism Maps of NiAl

2004 ◽  
Vol 449-452 ◽  
pp. 57-60
Author(s):  
I.G. Lee ◽  
A.K. Ghosh
Keyword(s):  
High Temperature ◽  
Strain Rate ◽  
Deformation Mechanism ◽  
Calculation Method ◽  
Deformation Behavior ◽  
Tensile Tests ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Grain Sizes ◽  
Temperature Strain

In order to analyze high temperature deformation behavior of NiAl alloys, deformation maps were constructed for stoichiometric NiAl materials with grain sizes of 4 and 200 µm. Relevant constitute equations and calculation method will be described in this paper. These maps are particularly useful in identifying the location of testing domains, such as creep and tensile tests, in relation to the stress-temperature-strain rate domains experienced by NiAl.

Comparison of Internal and Residual Stresses Measured by Strain-Dip Test and XRD during High Temperature Deformation of Al-Mg Solid Solutions

2013 ◽  
Vol 768-769 ◽  
pp. 351-357
Author(s):  
H. Sato ◽  
Y. Enomoto ◽  
K. Omote ◽  
S.I. Tanaka
Keyword(s):  
High Temperature ◽  
Residual Stresses ◽  
Internal Stress ◽  
Applied Stress ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Deformation Condition ◽  
Internal Stresses ◽  
Principal Stresses ◽  
Dip Test

Creep behavior of solid solution alloys are reasonably explained by concepts of the “internal and effective stress of high temperature deformation”. The internal stress is considered to be brought by formation of dislocation substructures, and the dislocation structures should have caused long range stress filed in interior of materials. Thus, residual stresses should also be brought by the same origin. In this paper, measurements of the residual stresses after creep deformation by 2D-Xray method are attempt, and the stresses are compared with so-called the “internal stress of high temperature deformation” measured by strain-dip stress-transient test. Although, the stress tensor depends on the deformation condition, the relation with the applied stress show complex manner at a glance. The maximum principal stresses, however, show relatively smaller than the applied stress, and fairly agree with that measured by strain-dip stress-transient technique. Importance of further considerations of the origin of so-called internal stresses is suggested.

Superplastic Elongation through Deformation Mechanism Transition during High-Temperature Deformation in Thermally Unstable Fine-Grained Aluminum Solid Solution Alloy

2016 ◽  
Vol 723 ◽  
pp. 21-26
Author(s):  
Tsutomu Ito ◽  
Takashi Mizuguchi
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Deformation Mechanism ◽  
Solute Drag ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Solid Solution Alloy ◽  
Fine Grained ◽  
Aluminum Solid Solution ◽  
Mechanism Transition

In this study, the superplastic behavior on a fine-grained aluminum solid solution alloy consisting of thermally unstable microstructures was investigated. In order to obtain the fine-grained microstructure, friction stir processing (FSP) was applied to a commercial 5083 aluminum alloy. An equiaxial fine-grained microstructure of 7.8 mm was obtained after FSP, but this microstructure was thermally unstable at high temperatures. Commonly, for fine-grained superplasticity to occur (or to continue grain boundary sliding (GBS)), it is necessary to keep the fine-grained microstructure to less than 10 mm during the high-temperature deformation. However, in this study, a large elongation of over 200% was observed at high temperatures in spite of the occurrence of grain growth. From the microstructural observations, it was determined that the fine-grained microstructure was maintained until the early stage of deformation, but the transgranular deformation was observed at a strain of over 100%. The microstructural feature of the abovementioned transgranular deformation is similar to the deformation microstructure of the solute drag creep occurring in "Class I"-type solid solution alloys. This indicates that the deformation mechanism transition from GBS to the solute drag creep occurred during high-temperature deformation. Here, the possibility of occurrence of the superplastic elongation through deformation mechanism transition is discussed as a model of the thermally unstable aluminum solid solution alloy.

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