Mechanical properties of bulk nanocrystalline aluminum-tungsten alloys

K. V. Rajulapati, R. O. Scattergood, K. L. Murty, Zenji Horita, T. G. Langdon, C. C. Koch

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The Al-W alloy powders containing up to 4 at. pct W particles in a nanocrystalline Al matrix were synthesized by ball milling and then hot compacted (HC) at 573 K or cold compacted using high-pressure torsion (HPT). Hardness measurements were made to determine the effects on mechanical properties. Based on existing models, the hardening effect of W particles in HC samples was attributed to Orowan-particle strengthening. Composite-type strengthening due to large W particles appeared to be negligible. Both the compressive strain and shear strain in high pressure torsion added to the strengthening effects without producing a change in the grain size.

Original languageEnglish
Pages (from-to)2528-2534
Number of pages7
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume39
Issue number10
DOIs
Publication statusPublished - Oct 1 2008

Fingerprint

tungsten alloys
Tungsten alloys
Strengthening (metal)
Torsional stress
aluminum alloys
Aluminum alloys
mechanical properties
Mechanical properties
Shear strain
Ball milling
Powders
torsion
Hardening
Hardness
shear strain
Composite materials
hardening
balls
hardness
grain size

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

Mechanical properties of bulk nanocrystalline aluminum-tungsten alloys. / Rajulapati, K. V.; Scattergood, R. O.; Murty, K. L.; Horita, Zenji; Langdon, T. G.; Koch, C. C.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 39, No. 10, 01.10.2008, p. 2528-2534.

Research output: Contribution to journalArticle

Rajulapati, K. V. ; Scattergood, R. O. ; Murty, K. L. ; Horita, Zenji ; Langdon, T. G. ; Koch, C. C. / Mechanical properties of bulk nanocrystalline aluminum-tungsten alloys. In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 2008 ; Vol. 39, No. 10. pp. 2528-2534.
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