Ta-Re synergistically strengthened high-strength and tough novel tungsten heavy alloy

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-02-18 DOI:10.1016/j.msea.2025.148081

Ziyi Li, Yao Wang, Peiyuan Fan, Jiatao Zhou, Wensheng Liu, Yufeng Huang, Yunzhu Ma

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引用次数: 0

Abstract

Enhancing both toughness and strength is a major challenge in alloy design, particularly in dual-phase W-Ni-Fe alloys. This study investigates the effects of tantalum (Ta) and rhenium (Re) on the mechanical properties of tungsten heavy alloys (WHAs). WHAs with various Ta and Re ratios were fabricated using powder metallurgy. The results show that the optimal amounts of Ta and Re significantly improve the overall properties of WHAs. Re formed a uniform solid solution in tungsten particles, refining the grain size to ∼10 μm, while nanoscale TaNi₃ (Ni–Ta intermetallic compounds) precipitates contributed to strengthening. The alloy's strength and toughness were synergistically enhanced through precipitation hardening, solid solution strengthening, and grain refinement. The ultimate tensile strength reached 1207 MPa, with an elongation of 30.25 %. This study offers a novel approach to improving the performance of WHAs.

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来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.