Plastic deformation behavior and microscopic mechanism of metastable Ti-10V-2Fe-3Al alloy single crystal pillars orientated to β in submicron scales Part II: Phase transformation dependence of size effect and deformation mechanism

2019 ◽  
Vol 743 ◽  
pp. 804-810 ◽  
Author(s):  
Yan Pan ◽  
Qiaoyan Sun ◽  
Lin Xiao ◽  
Xiangdong Ding ◽  
Jun Sun
Keyword(s):  
Plastic Deformation ◽  
Phase Transformation ◽  
Size Effect ◽  
Single Crystal ◽  
Deformation Mechanism ◽  
Deformation Behavior ◽  
Alloy Single Crystal ◽  
Microscopic Mechanism ◽  
Plastic Deformation Behavior

Effect of Grain Size on Deformation Twinning Behavior of Ti6Al4V Alloy

2015 ◽  
Vol 830-831 ◽  
pp. 337-340
Author(s):  
Ashish Kumar Saxena ◽  
Manikanta Anupoju ◽  
Asim Tewari ◽  
Prita Pant
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Strain Rate ◽  
Deformation Behavior ◽  
Deformation Behaviour ◽  
Air Cooling ◽  
Specific Strength ◽  
Aerospace Applications ◽  
Β Phase ◽  
Plastic Deformation Behavior

An understanding of the plastic deformation behavior of Ti6Al4V (Ti64) is of great interest because it is used in aerospace applications due to its high specific strength. In addition, Ti alloys have limited slip systems due to hexagonal crystal structure; hence twinning plays an important role in plastic deformation. The present work focuses upon the grain size effect on plastic deformation behaviour of Ti64. Various microstructures with different grain size were developed via annealing of Ti64 alloy in α-β phase regime (825°C and 850°C) for 4 hours followed by air cooling. The deformation behavior of these samples was investigated at various deformation temperature and strain rate conditions. Detailed microstructure studies showed that (i) smaller grains undergoes twinning only at low temperature and high strain rate, (ii) large grain samples undergo twinning at all temperatures & strain rates, though the extent of twinning varied.

Sign in / Sign up

Export Citation Format

Share Document