scholarly journals Microstructures and Mechanical Properties of Porosity-Graded Pure Titanium Compacts

2003 ◽  
Vol 44 (4) ◽  
pp. 657-660 ◽  
Author(s):  
Ik-Hyun Oh ◽  
Haruhiko Segawa ◽  
Naoyuki Nomura ◽  
Shuji Hanada
Keyword(s):  
Mechanical Properties ◽  
Pure Titanium ◽  
Microstructures And Mechanical Properties

scholarly journals Research on microstructure and mechanical properties of explosively welded stainless steel/commercially pure Ti plate

2019 ◽  
Vol 6 ◽  
pp. 28
Author(s):  
Marcin Małek ◽  
Marcin Wachowski ◽  
Robert Kosturek
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Explosive Welding ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Surface Protection ◽  
Commercially Pure ◽  
Stress Relieving ◽  
Wide Range ◽  
Microstructures And Mechanical Properties

Surface protection by the application of explosive welding is one of the meaningful methods used in many chemical devices like reactor condensers, heat exchangers, steam turbines and other processing apparatus. Due to the wide range of explosively welded applications, the problem of the useful lifetime of the products obtained by this method becomes important and should be well understood. Process of explosive welding is related to enormous pressure and high detonation velocity, which causes intense energy release in a short time, which favors to produce solid wavy bond featured with high metallurgical quality. Due to strain hardening in the bond zone, significant changes in microstructures and mechanical properties were observed. In this paper, 316L stainless steel explosively welded with commercially pure titanium was investigated to show the correlations and changes between microstructures and mechanical properties before and after annealing. Application of post-weld heat treatment contributes to stress relieving and improves the mechanical properties, which is closely related to microstructure recrystallization and hardness decrease adjacent to joint.

Microstructures and Mechanical Properties of Pure Titanium by Dynamic Plastic Deformation

2010 ◽  
Vol 667-669 ◽  
pp. 337-342 ◽  
Author(s):  
Jing Li Sun ◽  
Jing Tao Wang
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Strain Rate ◽  
Testing Machine ◽  
Pure Titanium ◽  
Area Fraction ◽  
Static Deformation ◽  
Static Compression ◽  
Microstructures And Mechanical Properties ◽  
Dynamic Plastic Deformation

Dynamic plastic deformation of commercially pure titanium in the temperature range of -100-18°C at the strain rates of 3.0×102-2.5×103, as well as at quasi-static compression were carried out by a Split Hopkinson Pressure Bar technique and conventional compression testing machine respectively. The formation of deformation twins plays a key role on the accommodation of a large amount of strain produced by plastic deformation. Grain orientation has a great influence on the formation of twins. Temperature has smaller effects than strain rate on the evolutions of the microstructures and mechanical properties. The area fraction of twins and their intersections increase with the increasing strain rate and the deformation strain, resulting in refined microstructures and higher hardness values. Strain rate also leads to the change of twin shape (type). While more lenticular twins are observed in samples after quasi-static deformation, there are lots of needle-like twins with straight and long boundaries in samples processed via dynamic plastic deformation. This may imply that different twin systems operate at different strain rate. For the needle-like twins in samples after dynamic plastic deformation, the twin area fraction approaches saturation beyond the true strain of about 0.13, which is significant turning point for twinning rate. This saturated trend is not observed in quasi-static deformation.

Influence of Nd addition on microstructures and mechanical properties of a hot-extruded Mg−6.0Zn−0.5Zr (wt.%) alloy

2019 ◽  
Vol 806 ◽  
pp. 1166-1179 ◽  
Author(s):  
Shuhui Lv ◽  
Fanzhi Meng ◽  
Xiaoling Lu ◽  
Qiang Yang ◽  
Xin Qiu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Nd Addition ◽  
Microstructures And Mechanical Properties
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