High-strength Al87Ni8La5 bulk alloy produced by spark plasma sintering of gas atomized powders

2009 ◽  
Vol 24 (9) ◽  
pp. 2909-2916 ◽  
Author(s):  
Sergio Scudino ◽  
Kumar B. Surreddi ◽  
Hoang V. Nguyen ◽  
Gang Liu ◽  
Thomas Gemming ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Spark Plasma Sintering ◽  
Room Temperature ◽  
Bulk Material ◽  
High Strength ◽  
Compression Tests ◽  
Bulk Alloy ◽  
Plasma Sintering ◽  
Spark Plasma

In situ devitrification and consolidation of gas atomized Al87Ni8La5 glassy powders into highly dense bulk specimens was carried out by spark plasma sintering. Room temperature compression tests of the consolidated bulk material reveal remarkable mechanical properties, namely, high compression strength of 930 MPa combined with plastic strain exceeding 25%. These findings demonstrate that the combined devitrification and consolidation of glassy precursors by spark plasma sintering is a suitable method for the production of Al-based materials characterized by high strength and considerable plastic deformation.

Properties of Dispersion Strengthened Cu-TiB2 Nanocomposites Prepared by Spark Plasma Sintering

2007 ◽  
Vol 119 ◽  
pp. 63-66 ◽  
Author(s):  
Dae Hwan Kwon ◽  
Thuy Dang Nguyen ◽  
Dina V. Dudina ◽  
Ji Soon Kim ◽  
Young Jin Yum ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Spark Plasma Sintering ◽  
Titanium Diboride ◽  
Bulk Material ◽  
Fold Increase ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Plasma Sintering ◽  
Spark Plasma

Preparation of titanium diboride reinforced copper matrix composites with high conductivity and mechanical strength was developed based on in situ produced powders. The effect of the titanium diboride content on the mechanical properties of the bulk material produced from the powders by Spark Plasma Sintering technique was studied. Increasing titanium diboride content from 2.5 up to 7.5 wt.% resulted in a 1.5-fold increase in yield strength, tensile strength and hardness and 5-fold increase in wear resistance with only 10% decrease in conductivity.

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