scholarly journals THERMALLY ACTIVATED DISLOCATION MOTION IN FCC AND REFRACTORY BCC METALS

1963 ◽  
Vol 2 (9) ◽  
pp. 165-167 ◽  
Author(s):  
R. H. Chambers
Keyword(s):  
Dislocation Motion ◽  
Thermally Activated ◽  
Bcc Metals

Dislocation motion in BCC metals by molecular dynamics

2001 ◽  
Vol 309-310 ◽  
pp. 160-163 ◽  
Author(s):  
Jinpeng Chang ◽  
Wei Cai ◽  
Vasily V Bulatov ◽  
Sidney Yip
Keyword(s):  
Molecular Dynamics ◽  
Dislocation Motion ◽  
Bcc Metals

Thermally Activated Dislocation Motion in an AS21 Alloy and Alloy Reinforced with Short Ceramic Fibres Studied at Elevated Temperatures

2013 ◽  
Vol 592-593 ◽  
pp. 71-74
Author(s):  
Zuzana Zdražilová ◽  
Zuzanka Trojanová ◽  
Kristián Máthis ◽  
Pavel Lukáč
Keyword(s):  
Magnesium Alloy ◽  
Stress Relaxation ◽  
Applied Stress ◽  
Elevated Temperatures ◽  
Activation Volume ◽  
Activation Enthalpy ◽  
Dislocation Motion ◽  
Thermally Activated ◽  
Effective Components ◽  
Thermally Activated Process

AS21 magnesium alloy (2.1Al-1Si-balance Mg in wt.%) and the alloy reinforced with short δ-Al2O3fibres (Saffil®) were deformed in compression at temperatures between 23 and 300 °C. Stress relaxation tests were performed in order to reveal features of the thermally activated dislocation motion. Internal and effective components of the applied stress have been estimated. The activation volume decreases with increasing effective stress. The values of the activation volume and the activation enthalpy indicate that the main thermally activated process in the alloy as well as in the composite is the dislocation motion in non-compact planes.

Sign in / Sign up

Export Citation Format

Share Document