scholarly journals Elevated Temperature Deformation and Fracture Mechanisms in High-Strain-Rate-Superplastic Si3N4p/Al–Cu–Mg Composite

2000 ◽  
Vol 41 (3) ◽  
pp. 367-375 ◽  
Author(s):  
Hajime Iwasaki ◽  
Takasuke Mori ◽  
Mamoru Mabuchi ◽  
Kenji Higashi
Keyword(s):  
Elevated Temperature ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Temperature Deformation ◽  
Fracture Mechanisms ◽  
Deformation And Fracture

Modelling and Analysis of High Strain Rate Deformation at Elevated Temperature in Friction Stirring of Aluminum Alloys

2016 ◽  
Vol 838-839 ◽  
pp. 110-115
Author(s):  
Katsuya Kumai ◽  
Hiroki Fukushige ◽  
Yoshimasa Takayama
Keyword(s):  
Elevated Temperature ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Frictional Heat ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Friction Stir ◽  
Fine Grain ◽  
High Strain Rate Deformation

Friction stirring is a fundamental process in the friction stir welding (FSW), and moreover, high strain rate deformation in elevated temperature to lead to extremely high ductility and fine grain size. In the present study, friction stirring process has been successfully modelled as a high temperature deformation depending on strain rate and temperature, assuming shear deformation of material in stir zone and generation of frictional heat by rotating tool. Axial load and torque during the process were estimated based on the model, and compared with the experimental data at two kinds of combination ratio in FSW of aluminum and Al-Mg alloy. It was, consequently, confirmed that the model could evaluate flow stress and strain rate from the experimental load and torque.

scholarly journals In situ TEM observations of high-strain-rate deformation and fracture in pure copper

2020 ◽  
Vol 33 ◽  
pp. 10-16
Author(s):  
T. Voisin ◽  
M.D. Grapes ◽  
T.T. Li ◽  
M.K. Santala ◽  
Y. Zhang ◽  
...  
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Pure Copper ◽  
In Situ Tem ◽  
Deformation And Fracture ◽  
High Strain Rate Deformation

Deformation and Fracture Behavior of 7039 Al Reinforced with B4C Particles at Elevated Temperature

2007 ◽  
Vol 351 ◽  
pp. 65-69 ◽  
Author(s):  
Cun Zhu Nie ◽  
Jia Jun Gu ◽  
Jun Liang Liu ◽  
Di Zhang
Keyword(s):  
Elevated Temperature ◽  
Strain Rate ◽  
Fracture Behavior ◽  
Aluminum Matrix ◽  
Rate Sensitivity ◽  
Initial Strain Rate ◽  
Initial Strain ◽  
Temperature Deformation ◽  
Uniaxial Tensile ◽  
Deformation And Fracture

The elevated temperature deformation and fracture behavior of an 10vol%B4CP/7039 aluminum matrix composite plate was investigated by uniaxial tensile tests at temperatures ranging from573 to 773 K and at initial strain rates from 1x10-1 to 1x10-4s-1.The strain rate sensitivity exponent was found to be approximately 0.1-0.15 which was below that of a superplastic material. A maximum elongation of 116% was obtained at an initial strain rate of 10-1 s-1 and at a temperature of 773 K.

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