J
John G. Speer
Researcher at Colorado School of Mines
Publications - 213
Citations - 10380
John G. Speer is an academic researcher from Colorado School of Mines. The author has contributed to research in topics: Austenite & Martensite. The author has an hindex of 44, co-authored 205 publications receiving 8521 citations. Previous affiliations of John G. Speer include Bethlehem Steel.
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Carbon partitioning into austenite after martensite transformation
TL;DR: In this paper, a model is developed to describe the endpoint of carbon partitioning between quenched martensite and retained austenite, in the absence of carbide formation.
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Quenching and partitioning martensite-a novel steel heat treatment
TL;DR: In this paper, a novel concept for the heat treatment of martensite, different to customary quenching and tempering, is described, which can be used to generate microstructures with martensites/austenite combinations giving attractive properties.
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Overview of processing, microstructure and mechanical properties of ultrafine grained bcc steels
TL;DR: In this paper, an overview of various techniques to fabricate ultrafine grained bcc steels, the corresponding microstructures, and the resulting spectrum of mechanical properties is presented.
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Partitioning of carbon from supersaturated plates of ferrite, with application to steel processing and fundamentals of the bainite transformation
TL;DR: In this article, a model for carbon partitioning between supersaturated ferrite and retained austenite is presented, where the process involves quenching the remaining austenites below the martensite-start temperature, followed by a partitioning treatment to enrich the remaining Austenite with carbon.
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Quantitative measurement of deformation-induced martensite in 304 stainless steel by X-ray diffraction
TL;DR: In this paper, a single X-ray diffraction scan was used for identifying and evaluating deformation-induced transformation in 304 austenitic stainless steel and the initial stage of transformation in this steel was most likely dominated by e−martensite formation.