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| TC6钛合金的超塑变形机制研究 |
| Study on the Superplastic Deformation Mechanism of Ti-Alloy TC6 |
| Received:October 10, 2011 Revised:November 10, 2011 |
| DOI： |
| 中文关键词: TC6 高效超塑变形 超塑性 最大m值超塑变形 |
| 英文关键词: TC6 high-efficiency superplastic deformation superplasticity maximum m SPD |
| 基金项目:国家自然科学基金资助项目（51075196） |
| Author Name | Affiliation | | WANG Gao-chao | School of Aviation Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China | | LI Juan | School of Aviation Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China | | XU Xue-feng | School of Aviation Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China | | SUN Qian-jiang | School of Aviation Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China | | DONG Hong-bo | School of Aviation Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China |
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| 中文摘要: |
| 提出了一种全新的超塑性研究方法：基于m值的高效超塑变形机制。采用该方法对TC6钛合金进行高温拉伸实验，研究其超塑性能，并与最大m值法超塑性进行比较分析。实验结果表明，细晶组织的该合金具有优良的超塑性，最佳变形温度在900 ℃，最大m值超塑变形可以获得20倍的最大延伸率；基于m值的高效超塑变形可以显著提高超塑成形效率，在获得延伸率为16.96倍的优良超塑性前提下，成形效率可提高13倍。 |
| 英文摘要: |
| A new superplastic deformation approach, the so-called high-efficiency superplastic deformation (HESPD) based on m value is proposed in this research and its mechanism is investigated via the superplastic deformation (SPD) of TC6 Ti-alloy by using the proposed approach. Through the physical experiments, the approach is compared with the maximum m SPD and it is shown that the Ti-alloy with fined microstructure behaves excellent SPD capacity. At the deformation temperature of 900 ℃, the best elongation of 2 000% is obtained by using the maximum m SPD. While with the HESPD, the elongation of the Ti-alloy is 1 696%,and the deformation efficiency is increased by 13 times. |
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