Alloying behaviour and microstructural changes of a Ti-10%Mo-10%Cr alloy on sintering process
This study aimed to investigate the effects of element diffusion on the alloying behaviour and microstructure of a Ti-10%Mo- 10%Cr alloy during sintering and furnace cooling. A theoretical calculation of the average diffusion distance for each element was performed to predict the alloying behaviou...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2018
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| Online Access: | http://journalarticle.ukm.my/12068/1/UKM%20SAINSMalaysiana%2047%2804%29Apr%202018%2021.pdf http://journalarticle.ukm.my/12068/ http://www.ukm.my/jsm/malay_journals/jilid47bil4_2018/KandunganJilid47Bil4_2018.htm |
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| Summary: | This study aimed to investigate the effects of element diffusion on the alloying behaviour and microstructure of a Ti-10%Mo-
10%Cr alloy during sintering and furnace cooling. A theoretical calculation of the average diffusion distance for each
element was performed to predict the alloying behaviour during sintering and furnace cooling. The Ti-10%Mo-10%Cr
alloy was fabricated using a blended element powder metallurgy approach. Micrograph of the samples after sintering
showed bright-circle structures and significantly decreased equiaxed structures. The number of plate-like structures
increased with prolonged sintering time. Microstructural changes occurred because of element diffusion resulting from
the prolonged sintering time. Moreover, the diffusion distance of each element also increased with prolonged sintering
time. Although elements can sufficiently diffuse during both sintering and furnace cooling, the diffusion distance during
sintering was considerably higher than that during furnace cooling for all elements. The diffusion distances of Cr and
Mo were the highest and lowest, respectively, during sintering and furnace cooling. This study showed that alloying
behaviour mostly occurred during sintering and was controlled by the diffusion of Mo atoms. |
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