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Title: Microstructure processes induced by phase transitions in a CuAu alloy as studied by acoustic emission and optical cinematography

Abstract

Combined acoustic emission measurements and surface cinematography observations have been applied to determine the structure evolution during thermal loading of the CuAu alloy. Thermal history and the fashion of thermal loading have been shown to affect considerably the structure response of the CuAu alloy on temperature changes. On thermal loading, intense plastic deformation occurs in certain temperature intervals due to the relaxation of internal stresses induced by phase transitions and structure anisotropy. The main mechanism is twinning taking place most probably in (110) planes. Dislocation glide and grain-boundary sliding have also been observed as minor mechanisms. A shape-restoration effect associated with the order-disorder transition is revealed. Thermal cycling with upper temperatures over 500 C may also result in structural damage.

Authors:
; ;  [1]; ;  [2]
  1. Charles Univ., Prague (Czech Republic). Dept. of Metal Physics
  2. Technische Univ. Braunschweig (Germany). Inst. fuer Metallphysik und Nukleare Festkoerperphysik
Publication Date:
OSTI Identifier:
329048
Resource Type:
Journal Article
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 47; Journal Issue: 2; Other Information: PBD: 15 Jan 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MICROSTRUCTURE; ORDER-DISORDER TRANSFORMATIONS; COPPER ALLOYS; GOLD ALLOYS; THERMAL CYCLING; STRESSES; ANISOTROPY; TWINNING; DISLOCATIONS

Citation Formats

Masek, P, Chmelik, F, Sima, V, Brinck, A, and Neuhaeuser, H. Microstructure processes induced by phase transitions in a CuAu alloy as studied by acoustic emission and optical cinematography. United States: N. p., 1999. Web. doi:10.1016/S1359-6454(98)00370-X.
Masek, P, Chmelik, F, Sima, V, Brinck, A, & Neuhaeuser, H. Microstructure processes induced by phase transitions in a CuAu alloy as studied by acoustic emission and optical cinematography. United States. https://doi.org/10.1016/S1359-6454(98)00370-X
Masek, P, Chmelik, F, Sima, V, Brinck, A, and Neuhaeuser, H. 1999. "Microstructure processes induced by phase transitions in a CuAu alloy as studied by acoustic emission and optical cinematography". United States. https://doi.org/10.1016/S1359-6454(98)00370-X.
@article{osti_329048,
title = {Microstructure processes induced by phase transitions in a CuAu alloy as studied by acoustic emission and optical cinematography},
author = {Masek, P and Chmelik, F and Sima, V and Brinck, A and Neuhaeuser, H},
abstractNote = {Combined acoustic emission measurements and surface cinematography observations have been applied to determine the structure evolution during thermal loading of the CuAu alloy. Thermal history and the fashion of thermal loading have been shown to affect considerably the structure response of the CuAu alloy on temperature changes. On thermal loading, intense plastic deformation occurs in certain temperature intervals due to the relaxation of internal stresses induced by phase transitions and structure anisotropy. The main mechanism is twinning taking place most probably in (110) planes. Dislocation glide and grain-boundary sliding have also been observed as minor mechanisms. A shape-restoration effect associated with the order-disorder transition is revealed. Thermal cycling with upper temperatures over 500 C may also result in structural damage.},
doi = {10.1016/S1359-6454(98)00370-X},
url = {https://www.osti.gov/biblio/329048}, journal = {Acta Materialia},
number = 2,
volume = 47,
place = {United States},
year = {Fri Jan 15 00:00:00 EST 1999},
month = {Fri Jan 15 00:00:00 EST 1999}
}