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Yu, Yiseul; Kim, S. S.; Park, M. W.

doi:10.1023/a:1006730801630

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…As expected [28][29][30], ultimate tensile stress and yield strength of both composites and the monolith alloy, all of them in T351 condition, diminished as the temperature of tensile test increased, Fig. 8.…”

Section: Discussionsupporting

confidence: 73%

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Room and high temperature tensile behaviour of a P/M 2124/MoSi2 composite at different heat treatment conditions

Torres

Lieblich

2006

J Mater Sci

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In the present work, a 2124/15vol%MoSi 2 composite was obtained by powder metallurgy. Its microstructure and mechanical properties were investigated at room and at high temperature (up to 200ºC) in conditions T351, T4 and after heat treatments at 495ºC for up to 100 hours. Up to 150ºC, tensile properties of 2124/MoSi 2 in T351 resulted similar to those of a ceramic reinforced 2124/SiC composite. Yield stress of the 2124/MoSi 2 material, after heating at 495ºC for up to 100 hours, resulted higher than that of the monolith 2124 alloy heated for the same periods. No diffusion reaction phases were formed surrounding the MoSi 2 reinforcing particles during such long exposures to high temperature. Only at 100 hours, large plate-like precipitates that contain Al, Cu, Mg and Si appeared. The high thermal stability of this 2124/MoSi 2 composite and its good mechanical properties at room and at elevated temperature makes MoSi 2 intermetallic a competitor of ceramic reinforcements.

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Section: Discussionsupporting

confidence: 73%

“…This contradicts the expected results. Normally, it would be accepted that ductility increases with increasing temperature due to recovery processes [16,28,29]. A possible explanation is that during high temperature exposure some depletion of solute elements occurred at the surface of Al powder particles which weakened their bonding.…”

Section: Discussionmentioning

confidence: 99%