scholarly journals Investigation of High-Energy Ion-Irradiated MA957 Using Synchrotron Radiation under In-Situ Tension

Materials ◽  
2016 ◽  
Vol 9 (1) ◽  
pp. 15 ◽  
Author(s):  
Kun Mo ◽  
Di Yun ◽  
Yinbin Miao ◽  
Xiang Liu ◽  
Michael Pellin ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
High Energy

scholarly journals Fast-current-heating devices to study in situ phase formation in metallic glasses by using high-energy synchrotron radiation

2020 ◽  
Vol 91 (7) ◽  
pp. 073901
Author(s):  
Jiri Orava ◽  
Konrad Kosiba ◽  
Xiaoliang Han ◽  
Ivan Soldatov ◽  
Olof Gutowski ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Formation ◽  
Metallic Glasses ◽  
High Energy

Thermal Stability of Retained Austenite in Low Alloyed TRIP-Steel Determined by High Energy Synchrotron Radiation

2013 ◽  
Vol 772 ◽  
pp. 129-133
Author(s):  
Stefan Brauser ◽  
Arne Kromm ◽  
Eitan Dabah ◽  
Thomas Kannengiesser ◽  
Michael Rethmeier
Keyword(s):  
Synchrotron Radiation ◽  
High Energy ◽  
Heating Process ◽  
Austenitic Phase ◽  
Trip Steels ◽  
The Stability ◽  
In Situ Diffraction ◽  
Kinetics Of ◽  
Thermal Stability Of

TRIP-steels offer a good combination between strength and ductility. Therefore TRIP-steels are widely used in the automobile industries. The aim of this work is to study the stability of involved phases during heating and to identify the kinetics of the occuring phase transformations. For that purpose, in-situ diffraction measurements, using high energy synchrotron radiation were conducted. The analysis revealed the decomposition of the metastable austenitic phase into carbide and ferrite along the heating process and the regeneration of the austenite by further heating of the sample.

In Situ High-Energy Synchrotron Radiation Study of Boehmite Formation, Growth, and Phase Transformation to Alumina in Sub- and Supercritical Water

2009 ◽  
Vol 15 (48) ◽  
pp. 13381-13390 ◽  
Author(s):  
Nina Lock ◽  
Martin Bremholm ◽  
Mogens Christensen ◽  
Jonathan Almer ◽  
Yu-Sheng Chen ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Synchrotron Radiation ◽  
Supercritical Water ◽  
High Energy ◽  
Radiation Study

In situ analysis of hydrogen behaviour in stainless steels by high energy synchrotron radiation

2011 ◽  
Vol 528 (3) ◽  
pp. 1608-1614 ◽  
Author(s):  
E. Dabah ◽  
Th. Kannengiesser ◽  
D. Eliezer ◽  
Th. Boellinghaus
Keyword(s):  
Synchrotron Radiation ◽  
Stainless Steels ◽  
High Energy ◽  
In Situ Analysis

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.

Changes of Internal Stress in Solid-Oxide Fuel Cell During Red-Ox Cycle Evaluated by In Situ Measurement With Synchrotron Radiation

2005 ◽  
Vol 3 (1) ◽  
pp. 68-74 ◽  
Author(s):  
Hirofumi Sumi ◽  
Kenji Ukai ◽  
Misuzu Yokoyama ◽  
Yasunobu Mizutani ◽  
Yoshihisa Doi ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Internal Stress ◽  
Coefficient Of Thermal Expansion ◽  
High Energy ◽  
Solid Oxide ◽  
In Situ Measurement ◽  
Oxide Fuel ◽  
Reduction Cycle ◽  
Increasing Temperature

The internal stress in anode-supported solid-oxide fuel cells (SOFCs) was evaluated by in situ measurement using high-energy x-ray synchrotron radiation. The oxidized cell had a compression of ∼400MPa in the c-ScSZ electrolyte thin film and a tension of 50–100 MPa in the NiO-YSZ anode substrate at room temperature. The internal stress decreased with increasing temperature, becoming approximately zero at 1000 K. Although the internal stress returned to its initial value after the thermal cycle, the stress decreased to ∼200MPa in the electrolyte after the reduction cycle because of the decrease of the coefficient of thermal expansion mismatch between the electrolyte and anode. The red-ox cycle would be detrimental for anode-supported SOFC.

scholarly journals High-energy synchrotron radiation X-ray diffraction measurements during in situ aging of a NiTi-15 at. % Hf high temperature shape memory alloy

Materialia ◽  
2019 ◽  
Vol 5 ◽  
pp. 100220 ◽  
Author(s):  
Matthew Carl ◽  
Jesse Smith ◽  
Robert W. Wheeler ◽  
Yang Ren ◽  
Brian Van Doren ◽  
...  
Keyword(s):  
High Temperature ◽  
Synchrotron Radiation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
High Energy ◽  
X Ray Diffraction ◽  
X Ray

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

2013 ◽  
Vol 135 (2) ◽  
Author(s):  
Kun Mo ◽  
Hsiao-Ming Tung ◽  
Jonathon Almer ◽  
Meimei Li ◽  
Xiang Chen ◽  
...  
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 laboratory-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 nondestructive technique for in-situ measurement, can be applied to ongoing material research for nuclear applications.

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