Austenite Grain Size Estimtion from Chord Lengths of Logarithmic-Normal Distribution

Autor:	Adrian H., Wiencek K.
Jazyk:	angličtina
Rok vydání:	2017
Předmět:	Austenite grain size linear section methods modelling Mining engineering. Metallurgy TN1-997 Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Archives of Metallurgy and Materials, Vol 62, Iss 4, Pp 2015-2019 (2017)
Druh dokumentu:	article
ISSN:	2300-1909 2017-0300
DOI:	10.1515/amm-2017-0300
Popis:	Linear section of grains in polyhedral material microstructure is a system of chords. The mean length of chords is the linear grain size of the microstructure. For the prior austenite grains of low alloy structural steels, the chord length is a random variable of gamma- or logarithmic-normal distribution. The statistical grain size estimation belongs to the quantitative metallographic problems. The so-called point estimation is a well known procedure. The interval estimation (grain size confidence interval) for the gamma distribution was given elsewhere, but for the logarithmic-normal distribution is the subject of the present contribution. The statistical analysis is analogous to the one for the gamma distribution.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/00d8f88f34894823b681fce7da01e500 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF