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金属学报    DOI: 10.11900/0412.1961.2025.00419
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热-力-电多场作用下钛合金构筑界面的结合机制
王丰1,2,3, 宋佳龙1,2, 李阔3, 赵龙哲3, 钱东升1,2

1 湖北隆中实验室  襄阳 441022

2 武汉理工大学 高温轻合金及应用技术全国重点实验室  武汉 430070 

3 中国科学院金属研究所  沈阳 110016

Bonding Mechanism of the Addition Forging Interface of Titanium Alloy Under Thermal-Force-Electrical Multi-Field Coupling

WANG Feng 1,2,3, SONG Jialong 1,2, LI Kuo 3, ZHAO Longzhe 3, QIAN Dongsheng 1,2

1 Hubei Longzhong Laboratory, Xiangyang 441022, China

2 State Key Laboratory of Light Superalloy, Wuhan 430070, China

3 Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

引用本文:

王丰, 宋佳龙, 李阔, 赵龙哲, 钱东升. 热-力-电多场作用下钛合金构筑界面的结合机制[J]. 金属学报, DOI: 10.11900/0412.1961.2025.00419.

全文: PDF(5976 KB)  
摘要: 
钛合金是航空航天领域重要结构材料,大型钛合金均质化制坯是航空航天装备制造领域面临的重要课题。本论文在热-力场构筑成形制坯工艺基础上,提出了钛合金热-力-电多场构筑成形新工艺。系统探究了热-力-电多场作用对TC4钛合金构筑界面结构演化、愈合效果及力学性能的影响。通过光学显微镜(OM)、扫描电子显微镜(SEM)、电子背散射衍射(EBSD)、单向拉伸等实验手段研究了不同电流加载下构筑界面的组织特征和力学性能,揭示了热-力-电多场作用对构筑界面愈合效果的影响机制。研究结果表明:在界面构筑过程引入适当电流(24A)可促进界面再结晶、界面氧原子扩散并降低界面内应力,从而显著促进构筑界面愈合效果,提升界面结合强度和剪切强度;而大电流(48A)下基体材料明显软化,基体材料与氧化物之间变形不协调,导致界面仍然存在大量孔洞和未分解氧化物。研究结果证实了热-力-电多场作用下界面愈合的提升效果,为大型钛合金均质化制坯提供了创新思路。
关键词 关键词:构筑成形钛合金热-力-电多场界面愈合力学性能。    
Abstract:itanium alloy is an important structural material in the aerospace field, and the preparation of large-scale homogenized titanium alloy billets is a key issue in the manufacturing of aerospace equipment. Based on the thermo-mechanical field addition forging and forming process for billet preparation, this paper further proposes a new thermo-mechanical-electrical multi-field addition forging and forming process for titanium alloys. It systematically investigated the effects of thermo-mechanical-electrical multi-field action on the interface structure evolution, healing effect, and mechanical properties of TC4 titanium alloy addition forging interfaces. By means of experimental methods such as optical microscopy (OM), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and uniaxial tensile testing, the microstructural characteristics and mechanical properties of the addition forging interfaces under different current loadings were studied, and the influence mechanism of thermo-mechanical-electrical multi-field action on the healing effect of the addition forging interfaces was revealed. The research results show that introducing an appropriate current (24A) during the interface addition forging process can promote interface recrystallization, interface oxygen atom diffusion, and reduce interface internal stress, thereby significantly improving the healing effect of the addition forging interface; however, under a high current (48 A), the matrix material is obviously softened, and there is deformation incoordination between the matrix material and oxides, resulting in a large number of pores and undissolved oxides remaining at the interface. The research results confirm the improvement effect of interface healing under thermo-mechanical-electrical multi-field action, and provide an innovative idea for the preparation of large-scale homogenized titanium alloy billets.
Key wordsKEYWORDS:addition forging    titanium alloy    thermo-force-electrical multi-field    interface healing    force properties.
收稿日期: 2025-12-23     
基金资助:国家重点研发计划(2024YFB3714200); 湖北省自然科学基金创新研究群体项目(2025AFA014)
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