Grain size measurement by the intercept method

Abrams, Halle

doi:10.1016/0026-0800(71)90005-x

Cited by 245 publications

(109 citation statements)

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“…After proper identification, the dimensions of these substructures were measured and statistics of the characteristic size were obtained. In the present work, the linear intercept method [20] was used to measure sizes of the PAGS and packets (PS). Equidistant horizontal and vertical lines were drawn (500 using OIM software) and the resulting mean intercept sizes of each line were averaged.…”

Section: Methodsmentioning

confidence: 99%

Effect of Prior Austenite Grain Size Refinement by Thermal Cycling on the Microstructural Features of As-Quenched Lath Martensite

Hidalgo

Santofimia

2016

Metall Mater Trans A

187

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Current trends in steels are focusing on refined martensitic microstructures to obtain high strength and toughness. An interesting manner to reduce the size of martensitic substructure is by reducing the size of the prior austenite grain (PAG). This work analyzes the effect of PAGS refinement by thermal cycling on different microstructural features of as-quenched lath martensite in a 0.3C-1.6Si-3.5Mn (wt pct) steel. The application of thermal cycling is found to lead to a refinement of the martensitic microstructures and to an increase of the density of high misorientation angle boundaries after quenching; these are commonly discussed to be key structural parameters affecting strength. Moreover, results show that as the PAGS is reduced, the volume fraction of retained austenite increases, carbides are refined and the concentration of carbon in solid solution as well as the dislocation density in martensite increase. All these microstructural modifications are related with the manner in which martensite forms from different prior austenite conditions, influenced by the PAGS.

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Section: Methodsmentioning

confidence: 99%

Effect of Prior Austenite Grain Size Refinement by Thermal Cycling on the Microstructural Features of As-Quenched Lath Martensite

Hidalgo

Santofimia

2016

Metall Mater Trans A

187

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“…[12] In the literature, various works using the MLI method to measure the size of grains have been proposed. [12][13][14][15][16][17][18][19][20] Willis and Lake [13] used the circle intercept method, and they concluded that the use of different measurement techniques in different laboratories results in significant variations in measured grain diameter and grain size distribution. Furthermore, Karlsson and Gokhale [20] proposed a method for estimating the MLI length of anisotropic structures using vertical sections and trisector methods.…”

Section: The MLI Methodsmentioning

confidence: 99%

“…[1,3,4] The main objective of this article is to unambiguously estimate the width or spacing between these homogeneous regions. To this effect, we employed two different methods: a modified version of the mean linear intercept (MLI) method [12][13][14][15][16][17][18][19][20] and an image analysis method based on spatial autocorrelations. [21][22][23][24][25] …”

Section: An Urgent Need Exists To Develop Quantitativementioning

confidence: 99%

Macroregion Size Measurements in Bimodal Titanium Forgings Using Two-Dimensional Autocorrelation Method

Toubal

Bocher

Moreau

et al. 2010

Metall Mater Trans A

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“…The pearlite colony diameter dC was measured by the linear intercept method [19], consisting of the account of the number of colonies intercepted by a random straight line drawn along the micrograph, considering the randomness of both the metallographic cut and the line and using statistical methods. The interlamellar spacing of pearlite s0 (Figure 2) was calculated by the method of the circular line [20], a variant of the linear intercept method, in which a circle of known length is drawn on the photograph, and the number of intersecting pearlite lamellae is counted (also taking into account the randomness).…”

Section: Microstructural Featuresmentioning

confidence: 99%

Influence of Microstructure on Strength and Ductility in Fully Pearlitic Steels

Toribio

González

Matos

et al. 2016

Metals

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This article deals with the relationship between the microstructure and both strength and ductility in eutectoid pearlitic steel. It is seen how standard mechanical properties and fracture micromechanisms are affected by heat treatment and the resulting microstructure in the material. The yield stress, the ultimate tensile strength and the ductility (measured by means of the reduction in area) exhibit a rising trend with the increasing cooling rate (associated with smaller pearlite interlamellar spacing and a lower pearlitic colony size), while the strain for maximum load shows a decreasing tendency with the afore-said rising cooling rate. With regard to the fracture surface, its appearance becomes more brittle for lower cooling rates, so that the fracture process zone exhibits a larger area with observable pearlite lamellae and a lower percentage of microvoids.

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Grain size measurement by the intercept method

Cited by 245 publications

References 0 publications

Effect of Prior Austenite Grain Size Refinement by Thermal Cycling on the Microstructural Features of As-Quenched Lath Martensite

Effect of Prior Austenite Grain Size Refinement by Thermal Cycling on the Microstructural Features of As-Quenched Lath Martensite

Macroregion Size Measurements in Bimodal Titanium Forgings Using Two-Dimensional Autocorrelation Method

Influence of Microstructure on Strength and Ductility in Fully Pearlitic Steels

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