scholarly journals Erratum to [Materials Science and Engineering A 680 (2016) 324–328]

2017 ◽  
Vol 687 ◽  
pp. 352
Author(s):  
H. Yang ◽  
D. Yu ◽  
Y. Chen ◽  
J. Mu ◽  
Y.D. Wang ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Materials Science ◽  
Cyclic Softening ◽  
Science And Engineering ◽  
Materials Science And Engineering

Asymmetric Lattice Response During Tensile and Compressive Deformation of a Uranium-Niobium Shape Memory Alloy

2004 ◽  
Vol 840 ◽  
Author(s):  
D. W. Brown ◽  
M. A. M. Bourke ◽  
P. S. Dunn ◽  
R. D. Field ◽  
M. G. Stout ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Time Of Flight ◽  
Compressive Deformation ◽  
Uniaxial Tensile ◽  
Total Deformation ◽  
The Asymmetry ◽  
Diffraction Patterns

ABSTRACTThe deformation of polycrystalline uranium 6 wt. % niobium (U6Nb) was studied in-situ during uniaxial tensile and compressive deformation by time-of-flight neutron diffraction. Diffraction patterns were recorded at incremental strains to roughly 4% total deformation. The asymmetry in the crystallographic response of the lattice is discussed.

Electronics Packaging Materials Research at NIST

1995 ◽  
Vol 390 ◽  
Author(s):  
Michael A. Schen ◽  
G. T. Davis ◽  
F. I. Mopsik ◽  
W. L. Wu ◽  
W. E. Wallace ◽  
...  
Keyword(s):  
Materials Science ◽  
Electronics Industry ◽  
Electronics Packaging ◽  
Government Agency ◽  
Science And Engineering ◽  
Materials Research ◽  
Materials Science And Engineering ◽  
Microelectronics Industry ◽  
Microelectronic Components

ABSTRACTThe Materials Science and Engineering Laboratory at NIST has augmented its laboratory-based research in support of the U.S. commercial microelectronics industry by expanding its efforts in electronics packaging, interconnection and assembly (P/I/A) materials technologies. In conjunction with industry, university and other government agency partners, these new NIST efforts target materials technology issues that underlie the priorities contained within the various electronics industry technology roadmaps. A dominant aspect of the laboratory P/I/A program focuses on the in-situ metrology and data needs associated with the materials and complex material assemblies which comprise today's microelectronic components and circuits.

scholarly journals In Situ Mechanical Loading and Neutron Bragg-edge Imaging, Applied to Polygranular Graphite On IMAT@ISIS

2021 ◽  
Author(s):  
T. A. C. Zillhardt ◽  
G. Burca ◽  
D. Liu ◽  
T. J. Marrow
Keyword(s):  
Materials Science ◽  
Mechanical Load ◽  
Coherent Scattering ◽  
Neutron Imaging ◽  
Science And Engineering ◽  
Material Microstructure ◽  
Time Resolved ◽  
Materials Science And Engineering ◽  
Novel Method

Abstract Background Bragg edge imaging have seen significant developments in the last decade with the availability of new time-resolved detectors, however, there have been no studies of changes in local coherent scattering from grain reorientation and deformation with load. Such damage accommodation mechanism may occur in (quasi)-brittle materials. Objective We developed a novel method using in-situ Bragg imaging at the ISIS spallation neutron and muon source on the IMAT (Imaging and MATerials science and engineering) instrument using an energy-resolved detector setup. We collected and analysed data of a proof-of-concept experiment demonstrating the use of the method. Methods We have developed a loading apparatus that addresses the constraints posed by Bragg imaging, allowing us to resolve features in the material microstructure. We use energy-resolved neutron imaging to obtain images in energy bins and we have developed a set of codes to register and correlate these images, as well as detect changes in local coherent scattering, in situ. Results Preliminary results from this method on Gilsocarbon nuclear graphite allow qualitative observation of local changes in Bragg contrast, which may be due to deformation or grain reorientation. Conclusions We have demonstrated that we can track changes in local coherent scattering under mechanical load, with sufficient resolution to track features with a size above 100 microns. This method, apparatus and accompanying codes may be used on the IMAT instruments by users interested to better understand deformation in their materials.

Kowari – OPAL’s Residual-Stress Diffractometer and its Application to Materials Science and Engineering

2008 ◽  
Vol 41-42 ◽  
pp. 439-444 ◽  
Author(s):  
Oliver Kirstein ◽  
Vladimir Luzin ◽  
Alain Brule ◽  
Hien Nguyen ◽  
David Tawfik
Keyword(s):  
Residual Stress ◽  
Neutron Diffraction ◽  
Residual Stresses ◽  
Research Reactor ◽  
Materials Science ◽  
Science Research ◽  
Science And Engineering ◽  
Material Science Research ◽  
Engineering Problems ◽  
Materials Science And Engineering

The Australian Nuclear Science and Technology Organisation (ANSTO) has recently started commissioning the new Australian Research Reactor OPAL that has replaced the old HIFAR reactor in January 2007. At the first stage, the new reactor will provide neutrons to several neutron scattering instruments. Among them is the residual stress diffractometer Kowari that was designed to study engineering problems related to residual stresses as well as allow material science research using neutron diffraction. We give an update on the progress of the instrument’s installation and commissioning and present an example to illustrate how neutron diffraction can be used to obtain information about residual stresses in a flash butt welded plate.

In situ neutron diffraction studies of the R-phase transformation in the NiTi shape memory alloy

2002 ◽  
Vol 74 (0) ◽  
pp. s1121-s1123 ◽  
Author(s):  
P. Luk�? ◽  
P. ?ittner ◽  
D. Lugovoy ◽  
D. Neov ◽  
M. Ceretti
Keyword(s):  
Phase Transformation ◽  
Neutron Diffraction ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Niti Shape Memory Alloy ◽  
In Situ Neutron Diffraction
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