scholarly journals Transformation of reverted austenite in a maraging steel under external loading: an in-situ X-ray diffraction study using high-energy synchrotron radiation

2009 ◽  
Vol 100 (11) ◽  
pp. 1566-1573 ◽  
Author(s):  
Gerald A. Zickler ◽  
Ronald Schnitzer ◽  
Rainer Hochfellner ◽  
Thomas Lippmann ◽  
Silvia Zinner ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Diffraction Study ◽  
Maraging Steel ◽  
High Energy ◽  
External Loading ◽  
X Ray Diffraction ◽  
X Ray ◽  
Reverted Austenite

scholarly journals In situ high-energy X-ray diffraction study and quantitative phase analysis in the α+γ phase field of titanium aluminides

2007 ◽  
Vol 57 (12) ◽  
pp. 1145-1148 ◽  
Author(s):  
LaReine A. Yeoh ◽  
Klaus-Dieter Liss ◽  
Arno Bartels ◽  
Harald Chladil ◽  
Maxim Avdeev ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Phase Analysis ◽  
Phase Field ◽  
Titanium Aluminides ◽  
High Energy ◽  
Quantitative Phase Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Quantitative Phase

scholarly journals Reactivity of LiBH4:  In Situ Synchrotron Radiation Powder X-ray Diffraction Study

2008 ◽  
Vol 112 (4) ◽  
pp. 1299-1303 ◽  
Author(s):  
Lene Mosegaard ◽  
Bitten Møller ◽  
Jens-Erik Jørgensen ◽  
Yaroslav Filinchuk ◽  
Yngve Cerenius ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray

Synchrotron Radiation Study on Alloy 617 and Alloy 230 for VHTR Application

2011 ◽  
Author(s):  
Kun Mo ◽  
Hsiao-Ming Tung ◽  
Xiang Chen ◽  
Weiying Chen ◽  
Jon B. Hansen ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Internal Stress ◽  
Applied Stress ◽  
Lattice Strain ◽  
High Energy ◽  
Uniaxial Tensile ◽  
X Ray Diffraction ◽  
Alloy 617 ◽  
X Ray

High-energy synchrotron radiation has proven to be a powerful technique for investigating fundamental deformation processes for various materials, particularly metals and alloys. In this study, high-energy synchrotron X-ray diffraction (XRD) was used to evaluate Alloy 617 and Alloy 230, both of which are top candidate structural materials for the Very-High-Temperature Reactor (VHTR). Uniaxial tensile experiments using in-situ high-energy X-ray exposure showed the substantial advantages of this synchrotron technique. First, the small volume fractions of carbides, e.g. ∼6% of M6C in Alloy 230, which are difficult to observe using lab-based X-ray machines or neutron scattering facilities, were successfully examined using high-energy X-ray diffraction. Second, the loading processes of the austenitic matrix and carbides were separately studied by analyzing their respective lattice strain evolutions. In the present study, the focus was placed on Alloy 230. Although the Bragg reflections from the γ matrix behave differently, the lattice strain measured from these reflections responds linearly to external applied stress. In contrast, the lattice strain evolution for carbides is more complicated. During the transition from the elastic to the plastic regime, carbide particles experience a dramatic loading process, and their internal stress rapidly reaches the maximum value that can be withstood. The internal stress for the particles then decreases slowly with increasing applied stress. This indicates a continued particle fracture process during plastic deformations of the γ matrix. The study showed that high-energy synchrotron X-ray radiation, as a non-destructive technique for in-situ measurement, can be applied to ongoing material research for nuclear applications.

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