Internal Friction Evidence on the Formation of Grain Boundary in Al Powder Sintering Process

2015 ◽  
Vol 32 (2) ◽  
pp. 026103
Author(s):  
Gang-Ling Hao ◽  
Xin-Fu Wang ◽  
Xian-Yu Li
Keyword(s):  
Internal Friction ◽  
Grain Boundary ◽  
Sintering Process ◽  
Powder Sintering ◽  
Al Powder

INTERNAL FRICTION PEAKS CONNECTED WITH GRAIN BOUNDARY SLIDING IN Al

1983 ◽  
Vol 44 (C9) ◽  
pp. C9-759-C9-764
Author(s):  
E. Bonetti ◽  
A. Cavallini ◽  
E. Evangelista ◽  
P. Gondi
Keyword(s):  
Internal Friction ◽  
Grain Boundary ◽  
Grain Boundary Sliding ◽  
Boundary Sliding

scholarly journals Fabrication of Two Layers Porous Aluminum Varying Porosity by Friction Powder Sintering Process and Its Compression Properties

2016 ◽  
Vol 80 (6) ◽  
pp. 390-393 ◽  
Author(s):  
Yoshihiko Hangai ◽  
Ayano Ishihara ◽  
Takao Utsunomiya ◽  
Osamu Kuwazuru ◽  
Nobuhiro Yoshikawa
Keyword(s):  
Sintering Process ◽  
Porous Aluminum ◽  
Compression Properties ◽  
Powder Sintering

scholarly journals Внутреннее трение на границах зерен, содержащих протяженные поры

2019 ◽  
Vol 45 (3) ◽  
pp. 23
Author(s):  
В.Г. Кульков ◽  
А.А. Сыщиков
Keyword(s):  
Shear Stress ◽  
Internal Friction ◽  
Grain Boundary ◽  
Temperature Dependence ◽  
Variable Shear ◽  
Scattered Energy ◽  
Cylindrical Pores ◽  
Mutual Displacement

AbstractA model of internal friction at a grain boundary containing equidistant parallel cylindrical pores is presented. Variable shear stress induces a mutual displacement of the interfacial regions matched at the segments between pores depending on their position. The values of scattered energy at each segment and total internal friction are determined. The temperature dependence of the internal friction has a form of a wide peak.

A Study on Influence of Annealing and Aging on High Temperature Internal Friction in Al-Zr Alloy

2012 ◽  
Vol 535-537 ◽  
pp. 1027-1030
Author(s):  
Xiao Hui Cao ◽  
Yu Wang
Keyword(s):  
High Temperature ◽  
Internal Friction ◽  
Grain Boundary ◽  
Low Frequency ◽  
Grain Boundary Sliding ◽  
High Temperature Side ◽  
Internal Friction Peak ◽  
Average Grain Size ◽  
Lower Temperature ◽  
Zr Alloy

By using a low frequency inverted torsion pendulum, the high temperature internal friction spectra of Al-0.02wt%Zr and Al-0.1wt%Zr alloys were investigated respectively. In Al-0.02wt%Zr alloy, the conventional grain boundary internal friction peak (Pg) is observed with some small unstable peaks. In Al-0.1wt%Zr alloy, the bamboo peak is observed to appear at the high temperature side of the conventional grain boundary internal friction peak. The conventional grain boundary internal friction peak decreased and moved to higher temperature. The bamboo peak owns an activation energy of 1.75eV. When average grain size exceeded the diameter of samples, Pb strength was reduced and its position was shifted to a lower temperature. Based on the grain boundary sliding model, Pg and Pb peaks were explained. Their dependence on annealing temperature and time was determined by considering the effects of contained Ce atoms and other impurities on the relaxation across grain boundary.

A novel method for making open cell aluminum foams by powder sintering process

2005 ◽  
Vol 59 (26) ◽  
pp. 3333-3336 ◽  
Author(s):  
B. Jiang ◽  
N.Q. Zhao ◽  
C.S. Shi ◽  
X.W. Du ◽  
J.J Li ◽  
...  
Keyword(s):  
Sintering Process ◽  
Aluminum Foams ◽  
Open Cell ◽  
Powder Sintering ◽  
Novel Method
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