Microstructures and mechanical properties of Ti6Al4V-Ti48Al2Cr2Nb alloys fabricated by laser melting deposition of powder mixtures

2020 ◽  
Vol 164 ◽  
pp. 110321 ◽  
Author(s):  
Ruixin Ma ◽  
Zhanqi Liu ◽  
Wenbo Wang ◽  
Guojian Xu ◽  
Wei Wang
Keyword(s):  
Mechanical Properties ◽  
Laser Melting ◽  
Powder Mixtures ◽  
Laser Melting Deposition ◽  
Microstructures And Mechanical Properties

Experiments and numerical simulations for the mechanical properties of Ni-based superalloys fabricated by laser melting deposition

2021 ◽  
Vol 140 ◽  
pp. 107058
Author(s):  
Jiaqi Zhang ◽  
Zhaozhen Huang ◽  
Yan Fang ◽  
Zhenjie Gu ◽  
Jichang Xie ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulations ◽  
Laser Melting ◽  
Laser Melting Deposition

scholarly journals Fabrication and mechanical properties of Al2O3/TiAl in situ composites doped with Nb2O5

2015 ◽  
Vol 47 (3) ◽  
pp. 311-317 ◽  
Author(s):  
F. Wang ◽  
N. Fan ◽  
J. Zhu ◽  
H. Jiang
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Flexural Strength ◽  
Hot Press ◽  
Dispersion Method ◽  
Powder Mixtures ◽  
In Situ Composites ◽  
Microstructures And Mechanical Properties

Al2O3/TiAl composites were successfully fabricated from powder mixtures of Ti, Al, TiO2, Cr2O3 and Nb2O5 by a hot-press-assisted exothermic dispersion method. The effect of the Cr2O3 and Nb2O5 addition on the microstructures and mechanical properties of Al2O3/TiAl composites was characterized. The results showed that the specimens are mainly composed of TiAl, Ti3Al, Al2O3, NbAl3 and Cr2Al. The Vicker-hardness and density of Al2O3/TiAl composites increase gradually with the increase of Nb2O5 content. When the Nb2O5 content was 6.54 wt %, the flexural strength and fracture toughness of the composites have a maximum values of 789.79 MPa and 9.69 MPa?m1/2, respectively. The improvement of mechanical properties is discussed in detail.

scholarly journals Microstructures and mechanical properties of ZA27-Al2O3 composites obtained by powder metallurgy process

2011 ◽  
Vol 43 (1) ◽  
pp. 63-70 ◽  
Author(s):  
D. Bozic ◽  
J. Stasic ◽  
V. Rajkovic
Keyword(s):  
Mechanical Properties ◽  
Strength Testing ◽  
Matrix Composites ◽  
Powder Mixtures ◽  
Al2o3 Powder ◽  
Za27 Alloy ◽  
Powder Metallurgy Process ◽  
Microstructures And Mechanical Properties ◽  
Average Size ◽  
Metallurgy Process

This paper describes a study of the microstructures and mechanical properties of Zn matrix composites reinforced by 10 wt.% Al2O3 particles of 0.7 ?m average size. Commercial Zn-Al-Cu (ZA27) alloy was gas atomized and the resulting powder was mixed with an Al2O3 powder, and then hot pressed into cylindrical pellets. Metal powder and powder mixtures were pressed at 230?C, for 45 min under the pressure of 150 MPa. The compressive strength testing was performed in the temperature range from 20?C to 160?C, with a deformation rate of 2.4?10-3s-1. The microstructures and the fracture surface of the samples were investigated by optical and scanning electron microscopy.

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