胡俊,路腾腾,申昱.超声辅助纯钛拉伸试验研究[J].精密成形工程,2018,10(4):75-78.
HU Jun,LU Teng-teng,SHEN Yu.Ultrasonic Vibration Tensile Test on Pure Titanium[J].Journal of Netshape Forming Engineering,2018,10(4):75-78. |
| 超声辅助纯钛拉伸试验研究 |
| Ultrasonic Vibration Tensile Test on Pure Titanium |
| 投稿时间：2018-03-13 修订日期：2018-07-10 |
| DOI：10.3969/j.issn.1674-6457.2018.04.011 |
| 中文关键词: 超声振动 拉伸微成形 屈服强度 抗拉强度 |
| 英文关键词: supersonic vibration tensile microforming yield strength tensile strength |
| 基金项目:国家自然科学基金（51635005） |
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| 中文摘要: |
| 目的 研究超声振动对材料流动特性的影响。方法 采用自制超声振动拉伸试验装置在不同超声频率和功率条件下进行TAl薄板超声辅助拉伸试验，获得了相应条件下的应力-应变曲线，并进一步比较了不同条件下材料屈服强度及抗拉强度。结果 叠加超声振动后，材料的屈服强度和抗拉强度均降低，表明材料出现软化效应。在频率为20 kHz条件下，材料屈服强度降低7%~10%，抗拉强度降低11%~14%，随着功率的增大，材料屈服强度逐渐下降，但功率对抗拉强度的影响并不显著。在功率为200 W时，材料屈服强度降低5%~8%，抗拉强度降低11%~14%，随着频率的增大，材料抗拉强度显著下降，但频率对屈服强度的影响并不显著。结论 超声振动对材料的屈服应力及抗拉强度等材料流动指标具有显著影响，研究结果对相关工艺设计提供了依据。 |
| 英文摘要: |
| The paper aims to study effects of supersonic vibration on material flow characteristics. Ultrasonic vibration tensile apparatus was used to carry out ultrasonic vibration tensile tests of TA1 thin sheet at different frequency and power. Stress-strain curves under corresponding conditions were obtained. The yield strength and tensile strength of different conditions were compared. The ultrasonic vibration could decrease the yield strength and tensile strength of material, which showed the softening effect of material. At 20 kHz, the yield strength decreased by 7%~10%, the tensile strength decreased by 11%~14%. With the increase of power, the yield strength decreased, but the tensile strength had no explicit change. At 200 W, the yield strength decreased by 5%~8%, the tensile strength decreased by 11%~14%. With the increase of frequency, the tensile strength decreased, but the yield strength had no explicit change. The supersonic vibration has explicit effects on yield strength and tensile strength of material, which provides relevant references for the process design. |
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