| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8955629 | Materials Letters | 2018 | 10 Pages |
Abstract
A new AZ91/TiNi composite has been developed in the present study. The composite containing 20% (vol.) TiNi reinforcement micro-particles was produced by hot pressing of initial prealloyed AZ91D and Ti49.2Ni50.8 powders at 420â¯Â°C for 1â¯h. Microstructural analysis revealed that matrix and reinforcement phases did not react each other during processing and a good bonding which is free from porosity, oxide and carbides was attained. Ti49.2Ni50.8 reinforcement increased room temperature yield strength, compressive strength and ductility of AZ91D alloy 5%, 50% and 30%, respectively. Most importantly, yield strength of the composite at 100â¯Â°C was found to be 267â¯MPa, 50% higher than that of AZ91D alloy (176â¯MPa) due to stress-induced martensitic transformation observed in the reinforcing alloy.
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Authors
Fevzi Kelen, Mehmet Gavgali, Tarik Aydogmus,