Effects of refractory metals on microstructure and mechanical properties of directionally-solidified TiAl alloys

2002 ◽  
Vol 329-331 ◽  
pp. 424-429 ◽  
Author(s):  
S Muto ◽  
T Yamanaka ◽  
D.R Johnson ◽  
H Inui ◽  
M Yamaguchi
Keyword(s):  
Mechanical Properties ◽  
Refractory Metals ◽  
Directionally Solidified ◽  
Tial Alloys ◽  
Microstructure And Mechanical Properties

Effect of Ca on Microstructure and Mechanical Properties of Directionally Solidified Mg-Zn-Ca Alloys

2020 ◽  
Vol 993 ◽  
pp. 161-165
Author(s):  
Yi Zhang ◽  
Xiao Hui Feng ◽  
Yuan Sheng Yang
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Tensile Tests ◽  
Deformation Mechanisms ◽  
Prismatic Slip ◽  
Directionally Solidified ◽  
Growth Orientation ◽  
Microstructure And Mechanical Properties ◽  
Dendritic Arm Spacing ◽  
Main Deformation

The effect of Ca on the microstructure and mechanical properties of directionally solidified (DSed) Mg-3Zn-xCa alloys (x=0.2,0.5,0.8wt.%) was investigated in the present work. The results showed that the DSed samples with the growth rate of 120 μm/s had columnar dendritic structures and the primary dendritic arm spacing (PDAS) decreased with the content of Ca increase. The TEM result indicated that the growth orientation of the DSed Mg-Zn-xCa alloys was , which was independent of the content of Ca. The tensile tests at room temperature showed that the mechanical properties of the DSed Mg-Zn-xCa alloys were strongly affected by the content of Ca. The addition of Ca remarkably improved the ultimate tensile strength (UTS) and the yield strength (YS), while dramatically reduced the elongation (El). Prismatic slip and twinning were the main deformation mechanisms in tensile tests.

Microstructure and mechanical properties of MoSi2 single crystals and directionally solidified MoSi2-Based alloys

1997 ◽  
Vol 42 (1-4) ◽  
pp. 193-207 ◽  
Author(s):  
Kazuhiro Ito ◽  
Takayuki Yano ◽  
Takayuki Nakamoto ◽  
masaya Moriwaki ◽  
Haruyuki Inui ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Single Crystals ◽  
Directionally Solidified ◽  
Microstructure And Mechanical Properties
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