Rolling-induced Face Centered Cubic Titanium in Hexagonal Close Packed Titanium at Room Temperature
- Beihang Univ., Beijing (China). School of Materials Science and Engineering; DOE/OSTI
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Materials Science and Technology Division
- Univ. of Nebraska, Lincoln, NE (United States). Mechanical and Materials Engineering
- Beihang Univ., Beijing (China). School of Materials Science and Engineering
- ZheJiang Univ. (China). State Key lab of Si Materials. Dept. of Materials Science
- Univ. of Pittsburgh, PA (United States). Dept. of Mechanical Engineering and Materials Science
Combining transmission electron microscopes and density functional theory calculations, we report the nucleation and growth mechanisms of room temperature rolling induced face-centered cubic titanium (fcc-Ti) in polycrystalline hexagonal close packed titanium (hcp-Ti). Fcc-Ti and hcp-Ti take the orientation relation: $$\langle$$0001$$\rangle$$hcp||$$\langle$$001$$\rangle$$fcc and {$$10\bar{1}0$$} hcp||{110}fcc, different from the conventional one. The nucleation of fcc-Ti is accomplished via pure-shuffle mechanism with a minimum stable thickness of three atomic layers, and the growth via shear-shuffle mechanisms through gliding two-layer disconnections or pureshuffle mechanisms through gliding four-layer disconnections. Such phase transformation offers an additional plastic deformation mode comparable to twinning.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1624829
- Journal Information:
- Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 6; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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