ISSN:
1572-8765
Keywords:
powder metallurgy
;
titanium alloy
;
metal matrix composite
;
TiB particle
;
blended elemental method
;
automobile
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The aim of the present study is to obtain a new high-performance titanium matrix composite appropriate for automobile parts using a new low-cost powder metallurgy process. The results can be summarized as follows: (1) A production process was developed for a sintered titanium alloy from cheap, low-purity titanium powder (sponge fines) which in its as-sintered form (without expensive hot isostatic pressing or heat treatment) achieves superior fatigue properties to hot-isostatic-pressed titanium alloy made from expensive high purity hydride-dehydride titanium powder. (2) TiB was found to be a superior reinforcing compound for blended elemental titanium matrix composites than SiC, B4C, TiAl, TiB2, TiN and TiC tested previously and it was used in the above low-cost production process to make the new disperse-particle titanium matrix composites. (3) The developed titanium matrix composite allows considerably cheaper production of parts from titanium alloy than by conventional ingot forging methods and was confirmed to be far superior to conventional titatium alloys in tensile strength, fatigue properties, rigidity, heat resistance, and wear resistance.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00711267
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