| TB6钛合金热变形行为及本构模型研究 |
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| 引用本文： | 崔军辉,杨 合,孙志超.TB6钛合金热变形行为及本构模型研究[J].稀有金属材料与工程,2012,41(7):1166-1170. |
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| 作者姓名： | 崔军辉 杨 合 孙志超 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室,陕西 西安,710072 |
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| 基金项目： | 国家自然科学基金重点项目 (50735005, 50935007)；国家自然科学青年基金 (50905145) 和国家“973”计划 (2010CB731701) |
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| 摘 要： | 研究材料的热变形行为及建立其本构模型是进行材料加工与模拟的基础。通过对TB6钛合金热变形行为分析,表明流变应力受应变速率的影响较显著,而变形温度对流变应力的影响程度与应变速率的大小有关。采用Arrhenius型双曲正弦方程建立了TB6钛合金流变应力本构模型。研究变形条件对TB6钛合金流变应力的影响。结果表明,可通过控制应变速率和变形激活能来控制热加工的应力水平和力能参数,为TB6钛合金塑性加工过程控制和模拟提供前提条件。
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| 关 键 词： | TB6钛合金 热变形行为 本构模型 变形激活能 控制 |
| 收稿时间： | 2011/7/21 0:00:00 |
Research on Hot Deformation Behavior and Constitutive Model of Titanium Alloy TB6 |
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| Cui Junhui,Yang He and Sun Zhichao.Research on Hot Deformation Behavior and Constitutive Model of Titanium Alloy TB6[J].Rare Metal Materials and Engineering,2012,41(7):1166-1170. |
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| Authors: | Cui Junhui Yang He and Sun Zhichao |
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| Affiliation: | (State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China) |
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| Abstract: | Hot deformation behavior and constitutive model play fundamental roles in processing and simulation of materials. The analysis of the hot deformation behavior of titanium alloy TB6 shows that the strain rate influences the flow stress significantly and the effect of deformation temperature on flow stress is correlated with the strain rate. In this paper, the constitutive model was established based Arrhenius-type hyperbolic sine equation. The investigation on the influence of deformation condition on flow stress was carried out. The results show that the flow stress and force can be controlled by changing the strain rate and activation energy. This study provides a guideline for the control and simulation of plastic deformation of titanium alloy TB6. |
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| Keywords: | TB6 titanium alloy hot deformation behavior constitutive model activation energy control |
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