Design of highly thermal-shock resistant tungsten alloys with nanoscaled intra- and inter-type K bubbles

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

1 Scopus Citations
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Author(s)

  • Bo Huang
  • Jun Tang
  • Longqing Chen
  • Xiaoliang Yang
  • Youyun Lian
  • Lei Chen
  • Xiang Liu
  • Xudong Cui
  • Lin Gu

Detail(s)

Original languageEnglish
Pages (from-to)149-159
Journal / PublicationJournal of Alloys and Compounds
Volume782
Early online date13 Dec 2018
Publication statusPublished - 25 Apr 2019

Abstract

Tungsten alloys with high strength, high toughness and high-temperature stability are strongly desired in extreme conditions. The nanoengineering of potassium bubbles (5–50 nm) is a fascinating strategy to strengthen these properties. However, such nano potassium bubbles can only be acquired in tungsten wires through swaging and drawing process till now. Here, we report an intra- and inter-potassium nano-bubbles strengthened bulk tungsten fabricated via an industrially applicable process combining aluminum-potassium-silicon (AKS) doping and spark plasma sintering (SPS), which exhibits desirable strength and remarkable toughness, as well as high thermal-shock resistance. The AKS-doping incorporated the K-Al-Si-O particles inside the W grains and the rapid high-temperature sintering of SPS produced the nanometer K bubbles from the K-Al-Si-O particles and kept the K bubbles inside the W grains. Our K-bubble strengthened tungsten material displays high potential in high-temperature applications. This strategy is also potentially applicable to other refractory metals such as molybdenum.

Research Area(s)

  • Mechanical properties, Metal matrix composites (MMC), Porous material, Potassium doped tungsten, Spark plasma sintering

Citation Format(s)

Design of highly thermal-shock resistant tungsten alloys with nanoscaled intra- and inter-type K bubbles. / Huang, Bo; Tang, Jun; Chen, Longqing; Yang, Xiaoliang; Lian, Youyun; Chen, Lei; Liu, Xiang; Cui, Xudong; Gu, Lin; Liu, Chain-Tsuan.

In: Journal of Alloys and Compounds, Vol. 782, 25.04.2019, p. 149-159.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review