Study of unique recrystallization kinetics in harmonic structure materials with outstanding mechanical properties

2020 年度 実績報告書

• 研究課題/領域番号: 20K15064
• 研究機関: 立命館大学
• 研究代表者: SHARMA BHUPENDRA 立命館大学, 総合科学技術研究機構, 研究員 (70868603)
• 研究期間 (年度): 2020-04-01 – 2021-03-31
• キーワード: Harmonic Structure / Pref. Recrystallization / Titanium / Hetero structure / thermomechanical / Powder Metallurgy

研究実績の概要

The preferential recrystalization phenomenon were analyzed via thermo-mechanical process (TMP). TMP results in a peculiar preferential recrystallization localized in Shell region of the HS-Ti owing to the preferential strain localization in shell during plastic deformation. This successfully led to superior properties. The study was successfully accomplished with 4 journal papers and 2 conferences.

研究成果

• [雑誌論文] Effect of stacking fault energy on deformation mechanisms in Cu and Cu-30% Zn alloy with gradient structure obtained by SMAT (2021)
  • 著者名/発表者名: Liu Xiaomin、Nakatani Masashi、Gao Hongliang、Sharma Bhupendra、Pan Hongjiang、Fu Zhengrong、Li Xingfu、Ameyama Kei、Zhu Xinkun
  • 雑誌名: Journal of Alloys and Compounds 巻: 865 ページ: 158863～158863
  • DOI: 10.1016/j.jallcom.2021.158863
  • 査読あり / 国際共著
• [雑誌論文] Extra-strengthening in a harmonic structure designed pure titanium due to preferential recrystallization phenomenon through thermomechanical treatment (2020)
  • 著者名/発表者名: Sharma Bhupendra、Miyakoshi Motoki、Vajpai Sanjay Kumar、Dirras Guy、Ameyama Kei
  • 雑誌名: Materials Science and Engineering: A 巻: 797 ページ: 140227～140227
  • DOI: 10.1016/j.msea.2020.140227
  • 査読あり / 国際共著
• [雑誌論文] Application of Hydride Process in Achieving Equimolar TiNbZrHfTa BCC Refractory High Entropy Alloy (2020)
  • 著者名/発表者名: Sharma Bhupendra、Nagano Kentaro、Saxena Kuldeep Kumar、Fujiwara Hiroshi、Ameyama Kei
  • 雑誌名: Crystals 巻: 10 ページ: 1020～1020
  • DOI: 10.3390/cryst10111020
  • 査読あり / オープンアクセス / 国際共著
• [雑誌論文] Harmonic Structure Design: A Strategy for Outstanding Mechanical Properties in Structural Materials (2020)
  • 著者名/発表者名: Sharma Bhupendra、Dirras Guy、Ameyama Kei
  • 雑誌名: Metals 巻: 10 ページ: 1615～1615
  • DOI: 10.3390/met10121615
  • 査読あり / オープンアクセス / 国際共著
• [学会発表] Outstanding Mechanical Properties in a Harmonic Structure Designed Titanium Due to Preferential Recrystallization (2020)
  • 著者名/発表者名: Bhupendra Sharma
  • 学会等名: TMS USA
  • 国際学会 / 招待講演
• [学会発表] Improvement in Mechanical Properties of Harmonic Structured Ti through Preferential Recrystallization assisted grain refinement (2020)
  • 著者名/発表者名: Bhupendra Sharma
  • 学会等名: The Japan Institute of Metals and Materials
  • 国際学会