INFLUENCE OF ECAP TEMPERATURE ON THE MECHANICAL PROPERTIES OF PURE TI

DU FeiPeng; LIU Fang; JIAO QingYa; WANG Fei

doi:10.16579/j.issn.1001.9669.2017.03.033

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INFLUENCE OF ECAP TEMPERATURE ON THE MECHANICAL PROPERTIES OF PURE TI

更新时间：2022-09-22

- INFLUENCE OF ECAP TEMPERATURE ON THE MECHANICAL PROPERTIES OF PURE TI
- Journal of Mechanical Strength Vol. 39, Issue 3, Pages: 692-696(2017)
- 作者机构：
  
  1. 上海理工大学机械工程学院
  2. 上海理工大学材料科学与工程学院
  3. 上海材料研究所
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.03.033
  CLC：
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DU FeiPeng, LIU Fang, JIAO QingYa, et al. INFLUENCE OF ECAP TEMPERATURE ON THE MECHANICAL PROPERTIES OF PURE TI. [J]. 39(3):692-696(2017)
DOI：

DU FeiPeng, LIU Fang, JIAO QingYa, et al. INFLUENCE OF ECAP TEMPERATURE ON THE MECHANICAL PROPERTIES OF PURE TI. [J]. 39(3):692-696(2017) DOI： 10.16579/j.issn.1001.9669.2017.03.033.

摘要

为研究温度对等通道转角挤压(ECAP)纯钛(CP-Ti)微观结构和力学性能的影响,采用自主设计的ECAP模具在室温、300℃两种不同挤压温度下对CP-Ti(TA2)圆棒料进行1道次挤压,并观察其微观结构及对其力学性能测试。研究结果表明,ECAP 1道次后试样晶粒得到细化并且出现板条状组织和孪晶,其显微硬度和强度都有了显著地提高,而塑性有所降低。室温ECAP1道次钛试样和300℃下ECAP1道次钛试样的显微硬度和强度极限由初始的179.5 kgf·mm,-2,、443 MPa分别增加到234.2 kgf·mm,-2,、560 MPa和213.5 kgf·mm,-2,、544 MPa,而断裂伸长率由初始的21.5%分别降为11.5%和16.5%。

Abstract

Commercial pure titanium（ CP-Ti） TA2 was pressed 1 pass by equal channel angular pressing（ ECAP） with BC route at room temperature（ RT） and 300℃,respectively. The microstructure and mechanical properties of the samples were investigated to find the influence of ECAP temperature on the mechanical properties of CP-Ti. The experimental results suggested that grains of the samples after ECAP 1 pass were elongated and lath-like and crystal twinning was found,the microhardness and tensile strength of the samples pressed 1 pass at room temperature and 300℃ increased from 179. 5 kgf·mm,-2,443 MPa to 234. 2 kgf·mm,-2,560 MPa and 213. 5 kgf·mm,-2,、544 MPa,respectively,while the elongation at break reduced from 21. 5% to 11. 5% and 16. 5%,respectively.

关键词

等通道转角挤压(ECAP)纯钛挤压温度微观结构力学性能

Keywords

Equal channel angular pressing（ECAP）CP-TiTemperatureMicrostructureMechanical properties

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