Superplastic Deformation Behavior of 2 mm Ti60 Rolled Sheet in Air Environment
Source abstract
Abstract
The superplastic deformation behavior of 2 mm Ti60 sheet is studied, and the constitutive equation of superplastic deformation is established. The results show that when the strain rate is 5.00 × 10 −3 s −1 and the temperature is 950 °C, the maximum superplastic elongation reaches 400%. Through the analysis of the true strain–true stress curve, it is found that the average apparent activation energy ( Q ) is 490.783 kJ mol −1 and the average strain rate sensitivity ( m ) is 0.49. Dynamic spheroidization (DG) promotes the transformation of lath α phase to equiaxed α phase. Dynamic recrystallization (DRX) promotes the generation of high‐angle grain boundaries ( θ > 15°). After deformation, the strength of R‐type textures changes significantly. From the grip to the tip, the strength of R‐type texture gradually weakens, which is mainly caused by the rotation of grains during deformation. The deformation mechanism of Ti60 sheet is dominated by grain boundary sliding, and is coordinated by grain growth, DG, DRX, dislocation motion, and grain rotation.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Titanium Alloys Microstructure and Properties · Microstructure and mechanical properties · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering Shenyang University of Technology Shenyang 110870 China
Technical Innovation Center for Lightweight and High Performance Metal Materials of Liaoning Province Shenyang University of Technology Shenyang 110870 China
Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China
School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China
National Key Laboratory of Advanced Casting Technologies Shenyang Research Institute of Foundry Co., Ltd. CAM Shenyang 110022 China
Funding
Department of Education of Liaoning Province · Natural Science Foundation of Liaoning Province
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