Using X-ray microdiffraction to determine grain sizes at selected positions in disks processed by high-pressure torsion

Tamás Ungár, Levente Balogh, Yuntian T. Zhu, Zenji Horita, Cheng Xu, Terence G. Langdon

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Disks of pure Cu, Cu-10% Zn and Cu-30% Zn were processed by high-pressure torsion (HPT) and then examined at selected positions using microhardness testing and X-ray microdiffraction line broadening. The results show excellent agreement between the microhardness measurements and X-ray microdiffraction. The grain sizes and the microhardness values are essentially constant across the diameters of the disks of pure Cu and the Cu-30% Zn alloy but for the Cu-10% Zn alloy the measured grain size is largest and the hardness is lowest in the center of the disk. The results demonstrate the potential for achieving a reasonably homogeneous microstructure in samples processed by HPT.

Original languageEnglish
Pages (from-to)153-156
Number of pages4
JournalMaterials Science and Engineering A
Volume444
Issue number1-2
DOIs
Publication statusPublished - Jan 25 2007

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Torsional stress
Microhardness
microhardness
torsion
grain size
X rays
x rays
hardness
Hardness
microstructure
Microstructure
Testing

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Using X-ray microdiffraction to determine grain sizes at selected positions in disks processed by high-pressure torsion. / Ungár, Tamás; Balogh, Levente; Zhu, Yuntian T.; Horita, Zenji; Xu, Cheng; Langdon, Terence G.

In: Materials Science and Engineering A, Vol. 444, No. 1-2, 25.01.2007, p. 153-156.

Research output: Contribution to journalArticle

Ungár, Tamás ; Balogh, Levente ; Zhu, Yuntian T. ; Horita, Zenji ; Xu, Cheng ; Langdon, Terence G. / Using X-ray microdiffraction to determine grain sizes at selected positions in disks processed by high-pressure torsion. In: Materials Science and Engineering A. 2007 ; Vol. 444, No. 1-2. pp. 153-156.
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