X-ray diffraction analysis of cold-worked Cu-Ni-Si and Cu-Ni-Si-Cr alloys by Rietveld method

2011 ◽  
Vol 21 (3) ◽  
pp. 482-487 ◽  
Author(s):  
A. KHEREDDINE ◽  
F. HADJ LARBI ◽  
L. DJEBALA ◽  
H. AZZEDDINE ◽  
B. ALILI ◽  
...  
Keyword(s):  
Diffraction Analysis ◽  
Rietveld Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cold Worked

X-Ray Diffraction Analysis of Defects in Cold Worked Type 316 Stainless Steel

2011 ◽  
Author(s):  
S. Murugesan ◽  
P. Kuppusami ◽  
E. Mohandas ◽  
M. Vijayalakshmi ◽  
Alka B. Garg ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
316 Stainless Steel ◽  
Cold Worked

X-Ray Diffraction Analysis and Magnetic Properties of Pr-Fe-B HDDR Powders and Magnets

2008 ◽  
Vol 591-593 ◽  
pp. 42-47 ◽  
Author(s):  
S.C. Silva ◽  
José Hélio Duvaizem ◽  
Luís Gallego Martinez ◽  
M.T.D. Orlando ◽  
Rubens Nunes de Faria Jr. ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Diffraction Analysis ◽  
Cast Alloy ◽  
Rietveld Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Anisotropy ◽  
Crystallite Sizes ◽  
Phase Quantification ◽  
Cell Refinement

Fine magnetic powder has been produced using the hydrogenation disproportionation desorption and recombination (HDDR) process. The first goal of this work involved an investigation of a range of disproportionation/desorption temperatures between 800 and 900°C with the purpose of optimizing the HDDR treatment for a Pr14Fe80B6 alloy. The cast alloy was annealed at 1100°C for 20 hours for homogenization. The optimum disproportionation temperature for achieving high anisotropy was 820°C. The influence of the reaction temperature on the microstructure and magnetic properties of Pr14Fe80B6 HDDR powders and magnets has been shown. A second stage of this study involved the characterization, for each temperature, of the HDDR processed powder using X-ray diffraction analysis. Samples of the HDDR material have been studied by synchrotron radiation powder diffraction using the Rietveld method for cell refinement, phase quantification and crystallite sizes determination. Scanning electron microscopy (SEM) has also been employed to reveal the morphology of the HDDR powder.

scholarly journals The Texture Behavior of Al-Mg-Sc Alloys

1970 ◽  
Vol 37 ◽  
pp. 10-17 ◽  
Author(s):  
MS Kaiser
Keyword(s):  
Diffraction Analysis ◽  
Mechanical Engineering ◽  
Cold Working ◽  
Cube Texture ◽  
X Ray Diffraction ◽  
Percent Reduction ◽  
X Ray ◽  
Annealing Texture ◽  
Cold Worked ◽  
Al Mg Alloys

Three alloys of Al-Mg with and without scandium are cold worked at different percentage and then annealed. The texture behavior of the alloys is studied by X-ray diffraction technique. The X-ray diffraction analysis is done using a PHILIPS PW1830 diffractometer with Cu-Kα radiation. It is found that the addition of scandium in Al-6Mg alloy influences the development of texture. The cube texture (100)[001] is preferred in the alloy in the initial stages of deformation, whereas beyond 50% deformation, the maximization of (220) intensity indicates that a mixed texture is developed on increasing the percent reduction. Keywords: Al-Mg alloys, Cold working, Annealing, Texture, X-ray diffraction.doi:10.3329/jme.v37i0.814Journal of Mechanical Engineering Vol.37 June 2007, pp.10-17

The Application of Quantitative X-Ray Diffraction (Rietveld Refinement) in Characterizing the Microstructure and Precipitates in Microalloyed Steels

2010 ◽  
Author(s):  
J. B. Wiskel ◽  
X. Li ◽  
J. Lu ◽  
D. G. Ivey ◽  
H. Henein
Keyword(s):  
Diffraction Analysis ◽  
Crystallite Size ◽  
Rietveld Refinement ◽  
Microalloyed Steel ◽  
Rietveld Method ◽  
Precipitate Size ◽  
Microalloyed Steels ◽  
X Ray Diffraction ◽  
Coiling Temperature ◽  
X Ray

Quantitative X-ray diffraction (the Rietveld Method) was used to quantify both the crystallite size (diffracting length) and precipitate size in several grades of microalloyed steels. The crystallite size calculated from diffraction profiles obtained from the rolling faces of X80 and X100 was found to decrease with decreasing coiling temperature. Quantitative X-ray diffraction analysis was also conducted on precipitate residues extracted (by matrix dissolution) from a Grade 100 microalloyed steel. A mean precipitate size of 4.8 nm was calculated for the fine (Nb, Mo, Ti, V) carbides observed in this steel. This value compares favourably with precipitate size measured using TEM and SANS analysis.

Ten-Vertex Polyhedral Monocarbaborane Chemistry. The Novel High-Yield Formation of the Ten-Vertex closo Compound [6-(PMe2Ph)-closo-1-CB9H9] from the Thermolysis of [8,8-(PMe2Ph)2-nido-8,7-PtCB9H11]

1993 ◽  
Vol 58 (12) ◽  
pp. 2924-2935 ◽  
Author(s):  
Jane H. Jones ◽  
Bohumil Štíbr ◽  
John D. Kennedy ◽  
Mark Thornton-Pett
Keyword(s):  
Nmr Spectroscopy ◽  
Diffraction Analysis ◽  
High Yield ◽  
Monoclinic Space Group ◽  
The Novel ◽  
X Ray Diffraction ◽  
Metal Centre ◽  
X Ray ◽  
Yield Formation ◽  
Boiling Toluene

Thermolysis of [8,8-(PMe2Ph)2-nido-8,7-PtCB9H11] in boiling toluene solution results in an elimination of the platinum centre and cluster closure to give the ten-vertex closo species [6-(PMe2Ph)-closo-1-CB9H9] in 85% yield as a colourles air stable solid. The product is characterized by NMR spectroscopy and single-crystal X-ray diffraction analysis. Crystals (from hexane-dichloromethane) are monoclinic, space group P21/c, with a = 903.20(9), b = 1 481.86(11), c = 2 320.0(2) pm, β = 97.860(7)° and Z = 8, and the structure has been refined to R(Rw) = 0.045(0.051) for 3 281 observed reflections with Fo > 2.0σ(Fo). The clean high-yield elimination of a metal centre from a polyhedral metallaborane or metallaheteroborane species is very rare.

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