Powder Metallurgy Processing and Mechanical Characterization of Iron-Based Composite Reinforced with Alumina and Zirconium Diboride

Author(s):  
Bhupendra Prakash Sharma ◽  
G. S. Rao ◽  
Umesh Kumar Vates
2012 ◽  
Vol 727-728 ◽  
pp. 61-66 ◽  
Author(s):  
F. Devesa ◽  
S. Rial ◽  
Vicente Amigó

Titanium is an increasingly used material on industry. Based on Ti and titanium alloys characteristics, one of the most favorable processing methods is the powder metallurgy. Attending to microstructure, alloys showing β phase have singular characteristics of low elastic modulus, good specific properties and high corrosion resistance, which make β-Ti alloys very appropriated for specific uses covering a width list of fields including aeronautics or biomaterials. At this work, it has been obtained and characterized different β-Ti alloys. The processing technique has been optimized by means of an initial blender elemental followed by basic powder metallurgy. Microstructural and mechanical characterization of the studied alloys has been achieved. Results show that these kinds of alloys can be produced by this technique and the obtained properties are really interesting for a wide variety of applications.


2009 ◽  
Vol 1243 ◽  
Author(s):  
I. Estrada-Guel ◽  
J. L. Cardoso ◽  
C. Careño-Gallardo ◽  
J. M. Herrera-Ramírez ◽  
R. Martínez-Sánchez

ABSTRACTAluminum-based composites prepared from pure Al powder and previously Cu metallized graphite are fabricated by a solid state route and are characterized by X-ray diffraction and scanning electron microscopy in order to follow their microstructural evolution. Composites are processed using powder metallurgy technique in order to obtain cylindrical samples to carry out mechanical testing. Microstructural and mechanical characterizations reveal that, by milling, a homogeneous dispersion of insoluble particles into the Al matrix is obtained; this produces an important improvement in hardness and strength with respect to an un-milled sample. Milling intensity and particle concentration have an important effect on the mechanical properties of the synthesized composites.


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