In Situ Photoelectron Emission Microscopy of a Thermally Induced Martensitic Transformation in a CuZnAI Shape Memory Alloy

Journal Article · Mon Feb 27 04:00:00 EST 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2177450· OSTI ID:878266

Xiong, Gang; Joly, Alan G; Beck, Kenneth M; Hess, Wayne P; Cai, Mingdong; Langford, Stephen C; Dickinson, J T

Photoemission electron microscopy, in conjunction with photoemission spectroscopy, reflectivity, and surface roughness measurements, is used to study the thermally-induced martensitic transformation in a CuZnAI shape memory alloy. Real-time phase transformation is observed as a nearly instantaneous change of photoelectron intensity, accompanied by microstructural deformation and displacement due to the shape memory effect. The difference in the photoelectron intensity before and after the phase transformation is attributed to the concomitant change of work function as measured by photoelectron spectroscopy. Photoemission electron microscopy is shown to be a valuable new technique facilitating the study of phase transformations in shape memory alloys, and provides real-time information on microstructural changes and phase-dependent electronic properties.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 878266
• Report Number(s): PNNL-SA-47843; 11102; KC0301020
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 9 Vol. 88; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
DEFORMATION
ELECTRON MICROSCOPY
Environmental Molecular Sciences Laboratory
MICROSCOPY
PHASE TRANSFORMATIONS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
REFLECTIVITY
ROUGHNESS
SHAPE
SHAPE MEMORY EFFECT
SPECTROSCOPY
TRANSFORMATIONS
WORK FUNCTIONS