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      Comparison of blended elemental (BE) and mechanical alloyed (MA) powder compact forging into Ti-6Al-4V rocker arms

      Jia, Mingtu; Zhang, Deliang; Gabbitas, Brian
      DOI
       10.4028/www.scientific.net/KEM.520.82
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      Citation
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      Jia, M., Zhang, D. & Gabbitas, B.. (2012). Comparison of blended elemental (BE) and mechanical alloyed (MA) powder compact forging into Ti-6Al-4V rocker arms. In 1st International Conference on Powder Processing, Consolidation and Metallurgy of Titanium, Brisbane, December 4-7 2011, (pp. 82-88). Brisbane, QLD.
      Permanent Research Commons link: https://hdl.handle.net/10289/6860
      Abstract
      Ti-6Al-4V rocker arms for internal combustion engines were produced by forging of compacts of blended powder consisting of elemental hydride-dehydride (HDH) titanium powder and Al60V40 (wt%) master alloy powder or mechanical alloyed (MA) powder synthesized by high energy mechanical milling of a mixture of HDH titanium and Al60V40 master alloy powders. The powder compacts were made by warm compaction, and their relative density was 90%. The mechanical properties and microstructures of as-forged parts made using blended powder were improved significantly with increasing holding time at forging temperature, and close to those of as-forged parts produced by powder compact forging of HDH Ti-6Al-4V pre-alloyed powder. However, the as-forged part produced by powder compact forging of MA powder was brittle, and fractured prematurely during tensile testing.
      Date
      2012
      Type
      Conference Contribution
      Publisher
      Trans Tech Publications
      Collections
      • Science and Engineering Papers [3122]
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