Mechanical and thermal stability of powder metallurgy aluminum-titanium alloys
Al--4Ti and Al--6Ti powders were prepared using helium gas atomization, mechanical alloying of Al powders and Al3Ti intermetallics, and mechanical alloying of the prealloyed Al--Ti atomized powders. The powders were vacuum hot pressed and extruded into rods and the microstructural and mechanical sta...
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| Veröffentlicht in: | Scripta metallurgica 1987-02, Vol.21 (2), p.129-134 |
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| container_title | Scripta metallurgica |
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| creator | Frazier, W.E. Koczak, M.J. |
| description | Al--4Ti and Al--6Ti powders were prepared using helium gas atomization, mechanical alloying of Al powders and Al3Ti intermetallics, and mechanical alloying of the prealloyed Al--Ti atomized powders. The powders were vacuum hot pressed and extruded into rods and the microstructural and mechanical stability on annealing were assessed using microhardness and notched-tensile tests. Both alloys exhibited excellent thermal stability even after 100 h exposure at 500 deg C. Mechanical alloying, in contrast to inert gas atomization, introduces carbides and oxides to the system, causing increased strength, higher hardness and reduced ductility. 14 ref.--D.O.N.(UK/US). |
| doi_str_mv | 10.1016/0036-9748(87)90422-4 |
| format | Article |
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The powders were vacuum hot pressed and extruded into rods and the microstructural and mechanical stability on annealing were assessed using microhardness and notched-tensile tests. Both alloys exhibited excellent thermal stability even after 100 h exposure at 500 deg C. Mechanical alloying, in contrast to inert gas atomization, introduces carbides and oxides to the system, causing increased strength, higher hardness and reduced ductility. 14 ref.--D.O.N.(UK/US).</description><subject>Applied sciences</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>Materials science</subject><subject>Metals, semimetals and alloys</subject><subject>Metals. Metallurgy</subject><subject>Physics</subject><subject>Powder metallurgy. Composite materials</subject><subject>Production techniques</subject><subject>Sintered metals and alloys. Pseudo alloys. 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| ispartof | Scripta metallurgica, 1987-02, Vol.21 (2), p.129-134 |
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| subjects | Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Metals, semimetals and alloys Metals. Metallurgy Physics Powder metallurgy. Composite materials Production techniques Sintered metals and alloys. Pseudo alloys. Cermets Specific materials |
| title | Mechanical and thermal stability of powder metallurgy aluminum-titanium alloys |
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