Controllable preparation of ultrafine bulk ODS W alloy with ultrahigh strength and improved ductility

Controllable preparation of ultrafine bulk ODS W alloy with ultrahigh strength and improved ductility

In order to alleviate the difficulties of coarse grains and poor mechanical properties in traditional hot worked bulk W alloys, we designed the entire chain preparation process including two-step freeze-drying, multi-step low temperature sintering and multi-step hot pressing. As a result, the hot wo...

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Veröffentlicht in:Scripta materialia 2025-02, Vol.256, p.116439, Article 116439
Hauptverfasser: Hu, Weiqiang, Qian, Zhu, Yan, ZuPeng, Shi, Guizhen, Sun, Xia, Ma, Zongqing, Liu, Yongchang
Format: Artikel
Sprache:eng
Schlagworte:
Coherent phase interface
Nanostructure
ODS W alloy
Ultrahigh strength and improved ductility
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Zusammenfassung:In order to alleviate the difficulties of coarse grains and poor mechanical properties in traditional hot worked bulk W alloys, we designed the entire chain preparation process including two-step freeze-drying, multi-step low temperature sintering and multi-step hot pressing. As a result, the hot worked bulk W-Y2O3 alloy in this work features finest grain size (650 nm) and finer subgrains, ultrafine intergranular and intragranular oxide nanoparticles (
ISSN:1359-6462
DOI:10.1016/j.scriptamat.2024.116439