原位自生相增强<strong>Ti-Zr-Cu-Pd-Mo</strong>非晶复合材料的制备及其力学性能

doi:10.11901/1005.3093.2023.227

材料研究学报

2024, Vol. 38

Issue (2): 105-110 DOI: 10.11901/1005.3093.2023.227

研究论文

本期目录 | 过刊浏览

原位自生相增强Ti-Zr-Cu-Pd-Mo非晶复合材料的制备及其力学性能

余圣¹, 郭威¹^,²^,³(

), 吕书林¹, 吴树森¹

^1.华中科技大学材料科学与工程学院材料成形与模具技术国家重点实验室武汉 430074
^2.深圳华中科技大学研究院深圳 518057
^3.西安交通大学金属材料强度国家重点实验室西安 710049

Synthesis and Mechanical Properties of Ti-Zr-Cu-Pd-Mo Amorphous Alloy Based Composites with In-situ Autogenous β-Ti Phase

YU Sheng¹, GUO Wei¹^,²^,³(

), LV Shulin¹, WU Shusen¹

^1.State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
^2.Research Institute of Huazhong University of Science and Technology in Shenzhen, Shenzhen 518057, China
^3.State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China

引用本文:

余圣, 郭威, 吕书林, 吴树森. 原位自生相增强Ti-Zr-Cu-Pd-Mo非晶复合材料的制备及其力学性能[J]. 材料研究学报, 2024, 38(2): 105-110.
Sheng YU, Wei GUO, Shulin LV, Shusen WU. Synthesis and Mechanical Properties of Ti-Zr-Cu-Pd-Mo Amorphous Alloy Based Composites with In-situ Autogenous β-Ti Phase[J]. Chinese Journal of Materials Research, 2024, 38(2): 105-110.

全文: PDF(8637 KB) HTML

摘要:

在Ti₄₀Zr₁₀Cu₃₆Pd₁₄非晶合金基体中微添加β-Ti相稳定化元素Mo，使体系在凝固过程中原位析出塑性β-Ti相，制备出原位自生β-Ti相增强Ti基非晶复合材料。在这种复合材料的变形过程中塑性β-Ti相阻碍基体中主剪切带的扩展，使其发生偏转和增殖生成多重剪切带，使其室温力学性能显著提高。其中(Ti_0.4Zr_0.1Cu_0.36Pd_0.14)₉₅Mo₅试样的室温强度达到2630 MPa，塑性应变达到7.3%，比基体分别提高了32.0%和508%。

关键词 ：金属材料, 非晶复合材料, 室温塑性, 剪切带

Abstract：

Ti-based amorphous alloys possess excellent properties such as low density, good biocompatibility and high corrosion resistance, which makes them one kind of promising materials used as biomedical materials. However, the room-temperature brittleness of Ti-based amorphous alloys limits their application. In order to improve the room-temperature plasticity of Ti-based amorphous alloys, the present study, a small amount of Mo (a β-Ti stabilizing element) is added to the Ti₄₀Zr₁₀Cu₃₆Pd₁₄ amorphous alloy so that the plastic β-Ti phase particles may be precipitated in-situ within the alloy during the solidification process. It is expected that in the subsequent deformation process, the plastic β-Ti phase can effectively impede the rapid propagation of the main shear band in the matrix, causing deflects, branching or multiplication of it. The multiple shear bands significantly improved the room-temperature mechanical properties. Finally, the optimal room-temperature mechanical properties were obtained for the amorphous alloy (Ti_0.4Zr_0.1Cu_0.36Pd_0.14)₉₅Mo₅which showed the fracture strength of 2630 MPa and plastic strain of 7.3%, namely 32.0% and 508% higher than that of the base alloy, respectively.

Key words： metallic materials amorphous alloy matrix composites room-temperature plasticity shear band

收稿日期: 2023-04-18

ZTFLH:

TG146.2

基金资助:国家自然科学基金(52101138);深圳市科技计划(JCYJ20220530160813032);新金属材料国家重点实验室开放基金(2020-Z01);金属材料强度国家重点实验室开放基金(20202205);广东省基础与应用基础研究基金(2020A1515110531)

通讯作者: 郭威，副研究员，weiguo@hust.edu.cn，研究方向为非晶复合材料组织及性能优化

Corresponding author: GUO Weil, Tel: 18627710273, E-mail: weiguo@hust.edu.cn

作者简介: 余圣，男，1998年生，硕士

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图1 Ti基非晶复合材料的XRD谱

图2 不同Mo含量样品的SEM照片和Mo元素的分布

图3 Mo5试样的SEM照片对应的元素面扫图

图4 不同Mo含量试样的室温压缩真应力-应变曲线

表1 不同Mo含量的Ti基非晶复合材料的杨氏模量E、断裂强度σf、屈服强度σy、断裂应变εf、屈服应变εp和加工硬化指数n

图5 不同Mo含量Ti基非晶复合材料的压缩断口及其侧面SEM图像

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