The Microstructural Evolution and Mechanical Properties of Boron-Doped Ti35Zr30V10Nb25 Refractory High-Entropy Alloy
收藏中国科学院兰州化学物理研究所科学数据中心2025-12-12 更新2026-01-10 收录
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资源简介：
The addition of oxygen or nitrogen in refractory high-entropy alloys (HEAs) has been
widely reported, but studies on boron-doped HEAs have mainly focused on the segregation of boron
elements at grain boundaries. The changes in the microstructure and mechanical properties in TiZrNbbased
HEAs remain enigmatic. In this work, boron-doped Ti35Zr30V10Nb25 (Ti35-xB) refractory HEAs
were designed to elucidate their microstructural evolution and mechanical properties. Unlike oxygen
and nitrogen, trace amounts of boron addition result in the formation of borides, and boron exhibits
a strong repulsion towards Zr, leading to Zr-depleted borides. Borides distributed along the grain
boundaries refine the grain size and dendritic structure. The borides and structural refinement effect
enhance the strain-hardening capacity and uniform elongation, resulting in an over 15% uniform
elongation for Ti35-0.25B.
提供机构：
中国科学院兰州化学物理研究所科学数据中心
创建时间：
2025-12-12
