Title of article :
EPM method of synthesizing intermetallics based on Ti
Author/Authors :
Park، نويسنده , , H.S. and Park، نويسنده , , K.L. and Hwang، نويسنده , , S.K.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Pages :
7
From page :
50
To page :
56
Abstract :
Elemental powder metallurgy (EPM) is a powerful means of synthesizing intermetallics of high melting points. In this study, two intermetallic compounds based on Ti were investigated using different consolidation techniques: TiAl–Mn–Mo–C by hot extrusion and Ti5Si3–Nb–C by electro-pressure sintering (EPS). Full density compounds were obtainable in both cases. Aided by interstitial carbon atoms, each intermetallic compound showed attractive mechanical properties such as high tensile yield strength and creep resistance in TiAl–Mn–Mo–C and high fracture toughness and transverse rupture strength in Ti5Si3–Nb–C. The roles of carbon atoms, being less than 1 at.% in each material system, were, refinement of the lamellar microstructure and precipitation hardening in the former, and a possible modification of the crystal structure towards easier slip and less thermal anisotropy in the latter.
Keywords :
microstructure , Tensile Properties , Carbon effect , intermetallics , Elemental powders , extrusion , Sintering
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Serial Year :
2002
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Record number :
2137538
Link To Document :
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