Texture control and enhancement of performance for pure titanium sheets using differential speed rolling

• Project/Area Number: 24560915
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Metal making engineering
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: HUANG XINSHENG 独立行政法人産業技術総合研究所, 構造材料研究部門, 主任研究員 (80415679)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 異周速圧延 / 純チタン / 組織制御 / 成形性

Outline of Final Research Achievements

Differential speed rolling was carried out on pure titanium (grade 2) to investigate the influences of processing conditions on texture and formability. In addition, for pure titanium with different purities (grades 1-3), normal symmetric rolling and differential speed rolling were carried out to investigate the influence of purity on microstructure, formability and mechanical properties. As a result, proper processing conditions were obtained and the mechanism of texture formation during differential speed rolling was revealed. The sheets processed by differential speed rolling exhibited improved stretch formability for all grades due to relatively isotropic texture and thus weakened planar anisotropy.

Research Products

• [Journal Article] Microstructural and textural evolution of pure titanium during differential speed rolling and subsequent annealing (2014)
  • Author(s): Xinsheng Huang, Kazutaka Suzuki, Motohiro Yuasa, Yasumasa Chino
  • Journal Title: Journal of Materials Science Volume: 49 Issue: 8 Pages: 3166-3176
  • DOI: 10.1007/s10853-014-8019-4
  • Peer Reviewed
• [Presentation] Microstructure and stretch formability of pure titanium sheets processed by differential speed rolling (2013)
  • Author(s): Xinsheng Huang, Kazutaka Suzuki, Motohiro Yuasa, Yasumasa Chino
  • Organizer: The international conference on processing and manufacturing of advance materials (THERMEC2013)
  • Place of Presentation: Rio Hotel (ラスベガス・アメリカ)