dc.contributor.author |
Masikane, M
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dc.contributor.author |
Chikwanda, HK
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dc.contributor.author |
Sigalas, I
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dc.date.accessioned |
2015-09-10T07:36:03Z |
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dc.date.available |
2015-09-10T07:36:03Z |
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dc.date.issued |
2015-07 |
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dc.identifier.citation |
Masikane, M, Chikwanda, H.K and Sigalas, I. 2015. A comparative study on the sintering and casting of a blended elemental Ti-6Al-4V alloy. In: Seventh International Light Metals Technology Conference(LMT 2015), Port Elizabeth, South Africa, July 27-29 |
en_US |
dc.identifier.uri |
http://www.scientific.net/MSF.828-829.421
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dc.identifier.uri |
http://hdl.handle.net/10204/8135
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dc.description |
Seventh International Light Metals Technology Conference(LMT 2015), Port Elizabeth, South Africa, July 27-29. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website |
en_US |
dc.description.abstract |
Over the past years, the blended elemental powder metallurgy (PM) approach has been identified as one of the most promising strategies to reduce the cost of titanium-based components. However, oxygen pick-up, inhomogeneity of the microstructure and chemical composition are sometimes reported for PM parts. This work compares properties of a blended elemental Ti-6Al-4V alloy obtained by sintering under argon gas atmosphere with those of a vacuum cast alloy. Argon was purified by passing it through a series of oxygen and moisture traps prior to being introduced into the sintering furnace. Casting was performed under vacuum (1 x 10-3 mbar). The starting material in both processes was the cold isostaticaly pressed blended elemental (BE) Ti-6Al-4V powder compact. The BE powder was prepared by mixing 60Al-40V master alloy powder with commercial Grade 4 titanium powder (0.377 wt.% O2). The sintered and cast alloys were compared on the basis of oxygen pick-up, density, microstructure, chemical composition and hardness to determine which method is better. Although the BE approach could not eliminate the common challenges associated with powder metallurgy processing of Ti alloys, oxygen pick-up and additional contamination was lower compared vacuum casting. Sintering at 1350°C for 1 h could not achieve full density compared to casting, but the microstructure appeared more homogeneous. Both sintered and cast Ti6Al4V alloys were harder than wrought Ti6Al4V due to a high concentration of interstitial oxygen. The sinterered and sintered plus HIPed Ti6Al4V alloys were softer than as-cast Ti6Al4V due to lower oxygen pick-up and incomplete densification. From the contamination and homogeneity perspective, the BE approach is an attractive technique for processing of Ti6Al4V alloy. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Trans Tech Publications |
en_US |
dc.relation.ispartofseries |
Workflow;15393 |
|
dc.subject |
Ti-6Al-4V |
en_US |
dc.subject |
Cold isostatic pressing |
en_US |
dc.subject |
Sintering, casting |
en_US |
dc.subject |
Elemental powder metallurgy |
en_US |
dc.subject |
Hardness |
en_US |
dc.title |
A comparative study on the sintering and casting of a blended elemental Ti-6Al-4V alloy |
en_US |
dc.type |
Conference Presentation |
en_US |
dc.identifier.apacitation |
Masikane, M., Chikwanda, H., & Sigalas, I. (2015). A comparative study on the sintering and casting of a blended elemental Ti-6Al-4V alloy. Trans Tech Publications. http://hdl.handle.net/10204/8135 |
en_ZA |
dc.identifier.chicagocitation |
Masikane, M, HK Chikwanda, and I Sigalas. "A comparative study on the sintering and casting of a blended elemental Ti-6Al-4V alloy." (2015): http://hdl.handle.net/10204/8135 |
en_ZA |
dc.identifier.vancouvercitation |
Masikane M, Chikwanda H, Sigalas I, A comparative study on the sintering and casting of a blended elemental Ti-6Al-4V alloy; Trans Tech Publications; 2015. http://hdl.handle.net/10204/8135 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Masikane, M
AU - Chikwanda, HK
AU - Sigalas, I
AB - Over the past years, the blended elemental powder metallurgy (PM) approach has been identified as one of the most promising strategies to reduce the cost of titanium-based components. However, oxygen pick-up, inhomogeneity of the microstructure and chemical composition are sometimes reported for PM parts. This work compares properties of a blended elemental Ti-6Al-4V alloy obtained by sintering under argon gas atmosphere with those of a vacuum cast alloy. Argon was purified by passing it through a series of oxygen and moisture traps prior to being introduced into the sintering furnace. Casting was performed under vacuum (1 x 10-3 mbar). The starting material in both processes was the cold isostaticaly pressed blended elemental (BE) Ti-6Al-4V powder compact. The BE powder was prepared by mixing 60Al-40V master alloy powder with commercial Grade 4 titanium powder (0.377 wt.% O2). The sintered and cast alloys were compared on the basis of oxygen pick-up, density, microstructure, chemical composition and hardness to determine which method is better. Although the BE approach could not eliminate the common challenges associated with powder metallurgy processing of Ti alloys, oxygen pick-up and additional contamination was lower compared vacuum casting. Sintering at 1350°C for 1 h could not achieve full density compared to casting, but the microstructure appeared more homogeneous. Both sintered and cast Ti6Al4V alloys were harder than wrought Ti6Al4V due to a high concentration of interstitial oxygen. The sinterered and sintered plus HIPed Ti6Al4V alloys were softer than as-cast Ti6Al4V due to lower oxygen pick-up and incomplete densification. From the contamination and homogeneity perspective, the BE approach is an attractive technique for processing of Ti6Al4V alloy.
DA - 2015-07
DB - ResearchSpace
DP - CSIR
KW - Ti-6Al-4V
KW - Cold isostatic pressing
KW - Sintering, casting
KW - Elemental powder metallurgy
KW - Hardness
LK - https://researchspace.csir.co.za
PY - 2015
T1 - A comparative study on the sintering and casting of a blended elemental Ti-6Al-4V alloy
TI - A comparative study on the sintering and casting of a blended elemental Ti-6Al-4V alloy
UR - http://hdl.handle.net/10204/8135
ER -
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en_ZA |