Magnetic and X-ray diffraction measurements for the determination of retained austenite in TRIP steels

2001 ◽  
Vol 313 (1-2) ◽  
pp. 145-152 ◽  
Author(s):  
L Zhao ◽  
N.H van Dijk ◽  
E Brück ◽  
J Sietsma ◽  
S van der Zwaag
Keyword(s):  
Retained Austenite ◽  
X Ray Diffraction ◽  
X Ray ◽  
Trip Steels

Effect of Different Coiling Temperature on Mechanical Properties in Hot Rolled TRIP Steel

2011 ◽  
Vol 239-242 ◽  
pp. 1092-1095
Author(s):  
Xu Tao Gao ◽  
Ai Min Zhao ◽  
Zheng Zhi Zhao ◽  
Ming Ming Zhang ◽  
Di Tang
Keyword(s):  
Mechanical Properties ◽  
Retained Austenite ◽  
X Ray Diffraction ◽  
Coiling Temperature ◽  
Experimental Steel ◽  
Transformation Induced Plasticity ◽  
X Ray ◽  
Trip Steels ◽  
Hot Rolled ◽  
Scanning Electron

By means of optical microscopy(OM), scanning electron microscopy(SEM),X-ray diffraction(XRD),And tensile test, Mechanical Properties of hot rolled transformation -induced plasticity (TRIP) steels which were prepared through three different coiling temperature was investigated. Result reveals that the formability index of the experimental steel descends when the coiling temperature becomes low. Different coiling temperature has greater impact on retained austenite. Amount and carbon content of retained austenite in the experimental steel get less with lower coiling temperature.

Determination of low levels of retained austenite in low-carbon high-manganese steel using X-ray diffraction

2015 ◽  
Vol 628 ◽  
pp. 110-115 ◽  
Author(s):  
Helder Carvalho Ferreira ◽  
Francisco Jose Martins Boratto ◽  
Vicente Tadeu Lopes Buono
Keyword(s):  
Retained Austenite ◽  
Manganese Steel ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
High Manganese ◽  
High Manganese Steel ◽  
X Ray ◽  
Low Levels

Thermal stability of retained austenite in TRIP steels studied by synchrotron X-ray diffraction during cooling

2005 ◽  
Vol 53 (20) ◽  
pp. 5439-5447 ◽  
Author(s):  
N VANDIJK ◽  
A BUTT ◽  
L ZHAO ◽  
J SIETSMA ◽  
S OFFERMAN ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Retained Austenite ◽  
X Ray Diffraction ◽  
X Ray ◽  
Trip Steels ◽  
Thermal Stability Of

Quantitative Analysis of Platelike Pigments by X-Ray Diffraction

1982 ◽  
Vol 26 ◽  
pp. 129-135
Author(s):  
P. Kamarchik ◽  
J. Ratliff
Keyword(s):  
Quantitative Analysis ◽  
Retained Austenite ◽  
Pigment Composition ◽  
X Ray Diffraction ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Degree Of Orientation ◽  
Paint Films ◽  
Marked Tendency

X-ray diffraction has been shown to provide an accurate qualitative and quantitative determination of the pigment composition of paint films. This analysis, however, is frequently complicated by the presence of pigments with plate-like crystallites which show a marked tendency to orient in preferred directions in drying paint films. The variability in the degree of orientation causes line intensity variations not attributable to pigment concentration.A technique based on a summation of the intensities of many lines has been used to correct for the effects of preferred orientation in the analysis of retained austenite in certain steels. This method is shown to be applicable to the quantitative analysis of mica in paint films.

Techniques for the Determination of Particle Size and Texture in Retained Austenite / Martensite Microstructures and Interpretation of the Measurements

1995 ◽  
Vol 39 ◽  
pp. 473-479
Author(s):  
J. D. Makinson ◽  
W. N. Weins ◽  
Y. Xu ◽  
D. J. Medlin ◽  
R. V. Lawrence
Keyword(s):  
Particle Size ◽  
Retained Austenite ◽  
Quantitative Information ◽  
Manufacturing Processes ◽  
X Ray Diffraction ◽  
Steel Component ◽  
X Ray ◽  
Other Information ◽  
Diffraction Peaks

The measurement of retained austenite is important in the analysis and quality control of asmanufactured steel components, as well as to the evaluation of components returned from service. The amounts of retained austenite are most accurately measured using x-ray diffraction techniques where the integrated area under the austenite and martensite diffraction peaks from a sample are determined. In addition to quantitative information about the amount of each phase, however, the raw x-ray diffraction data contains other information that may be useful in evaluating the condition of a steel component. The diffracting particle size of both the martensite and austenite phases, and the presence and degree of preferred orientation in both phases can be calculated from the basic four peak retained austenite x-ray scan. This information, in conjunction with knowledge of the amount of retained austenite present, may be used to determine information about variations in materials and manufacturing processes as well as changes due to service. If the residual stress in both phases is also measured, additional conclusions can be made regarding changes due to processing and service. The theoretical and experimental aspects of these measurements are reviewed data from a case history in which these types of measurements were used to determine changes due to processing and service are presented.

High-Speed Retained Austenite Analysis with an Energy Dispersive X-Ray Diffraction Technique

1973 ◽  
Vol 17 ◽  
pp. 124-138 ◽  
Author(s):  
A. P. Voskamp
Keyword(s):  
Diffraction Analysis ◽  
Retained Austenite ◽  
High Speed ◽  
Conventional Technique ◽  
Energy Dispersive ◽  
Correction Factors ◽  
X Ray Diffraction ◽  
Time Saving ◽  
X Ray

SummaryA time saving method has been applied for the determination of retained austenite.The method involved is based on the approach of energy dispersive X-ray diffraction analysis. With this approach, polychromatic radiation from the X-ray tube is used and diffraction maxima will occur at a fixed angle 2θ in as many wavelengths or energies as “d“ values are present.Giessen and Gordon published the first application of this method to powder diffraction analysis in 1968 for the identification of crystal structures. As the determination of retained austenite is a quantitative type of analysis, based upon identification of the crystal structure, the new approach should also be applicable in principle.With almost 100 samples of unknown austenite content, experiments have been carried out both with the conventional and the energy dispersive X-ray diffraction technique. The results obtained are closely comparable and the retained austenite values together with the errors are shown.For these measurements, experiments have been carried out with the energy dispersive technique to determine the relation between the known concentration of retained austenite in a number of standards and the intensity correction factors (R). The results obtained from these experiments have shown good reproducibility of the intensity correction factors.Using this technique, a five-fold reduction in analysis time is possible over the conventional technique with no reduction in accuracy.

Sem and X-Ray Analysis of Renal and Biliary Calculi

1976 ◽  
Vol 34 ◽  
pp. 306-307
Author(s):  
R. J. Narconis ◽  
G. L. Johnson
Keyword(s):  
Chemical Constituents ◽  
Natural State ◽  
X Ray Diffraction ◽  
Chemical Methods ◽  
X Ray ◽  
Additional Dimension ◽  
Biliary Calculi ◽  
Calculus Formation ◽  
Scanning Electron

Analysis of the constituents of renal and biliary calculi may be of help in the management of patients with calculous disease. Several methods of analysis are available for identifying these constituents. Most common are chemical methods, optical crystallography, x-ray diffraction, and infrared spectroscopy. The application of a SEM with x-ray analysis capabilities should be considered as an additional alternative.A scanning electron microscope equipped with an x-ray “mapping” attachment offers an additional dimension in its ability to locate elemental constituents geographically, and thus, provide a clue in determination of possible metabolic etiology in calculus formation. The ability of this method to give an undisturbed view of adjacent layers of elements in their natural state is of advantage in determining the sequence of formation of subsequent layers of chemical constituents.

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