Use of X-Ray Diffraction Using Gaussian Curve Method for Measuring Plastic Strain of Steels

1991 ◽  
pp. 633-642
Author(s):  
Masanori Kurita ◽  
Kenzo Chiaki
1990 ◽  
Vol 34 ◽  
pp. 633-642
Author(s):  
Masanori Kurita ◽  
Kenzo Chiaki

AbstractPlastic deformation of metals will broaden the x-ray diffraction line. The diffraction line around its peak can he approximated by a Gaussian function. The broadness of the diffraction line can be evaluated by the standard deviation, called Gaussian curve parameter (GCP), of a Gaussian function approximating the diffraction peak. Plastic strains applied to mild steels by simple and combined tension, compression, and tortion were correlated with GCP. Two kinds of GCP's were determined; the one, GCP α', was determined from the diffraction line corrected for the background counts, and the other, GCP α, was from the line uncorrected for the background, The GCP α' can be obtained from the GCP α asα' = 0.936α + 0.011This equation shows that the background subtraction can be omitted in determining GCP. The equivalent plastic strain ɛeq can be evaluated from the GCP a asɛeq - 0.000108 x 103.97αThis x-ray method allows rapid measurement of complex plastic strain without touching specimens.


1986 ◽  
Vol 14 (1) ◽  
pp. 33 ◽  
Author(s):  
AS Kleinberg ◽  
B Grugan ◽  
K Greene ◽  
B Benzing ◽  
JR Schroeder ◽  
...  

1986 ◽  
Vol 52 (482) ◽  
pp. 2429-2435 ◽  
Author(s):  
Masanori KURITA ◽  
Matsuo MIYAGAWA ◽  
Kenzo CHIAKI ◽  
Isao SAKAMOTO

2009 ◽  
Vol 2009 (0) ◽  
pp. 654-655
Author(s):  
Takayoshi SUZUKI ◽  
Jun-ichi SHIBANO ◽  
Koji KIRIYAMA ◽  
Takayuki ARAI ◽  
Setsuo MIURA ◽  
...  

2008 ◽  
Vol 2008 ◽  
pp. 1-6 ◽  
Author(s):  
Guido Ennas ◽  
Maria F. Casula ◽  
Sergio Marras ◽  
Gabriele Navarra ◽  
Alessandra Scano ◽  
...  

A nanocomposite with an FeOOH/SiO2ratio equal to 17.7 wt% and the pertinent matrix, obtained by etching away the nanoparticles through reaction with hydrochloric acid, were investigated by XRD, TGA-DTA, heliostereopicnometry, BET, and TEM techniques. The study shows the presence in the nanocomposite of ferrihydrite nanoparticles phase with average dimensions around 4 nm. The FeOOH nanoparticles structure was analyzed by synchrotron X-ray diffraction data using the distribution difference curve method. The porous structure of the matrix resulting by etching away the nanoparticles differs significantly from that of a pureSiO2sample obtained by hydrolysis of TEOS under the same operative conditions followed in the nanocomposite preparation.


2005 ◽  
Vol 76 (3) ◽  
pp. 036106 ◽  
Author(s):  
L. D. Doucette ◽  
M. Pereira da Cunha ◽  
R. J. Lad

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