Journal ArticleDOI
Microstructures and hardness of as-quenched martensites (0.1-0.5%C)
Bevis Hutchinson,Joacim Hagström,Oskar Karlsson,David Lindell,Malin Tornberg,Fredrik Lindberg,Mattias Thuvander +6 more
TLDR
In this paper, four commercial steels with carbon contents in the range 1-05 wt% have been examined in the as-quenched condition using electron microscopy, X-ray diffraction and atom probe tomography.About:
This article is published in Acta Materialia.The article was published on 2011-08-01. It has received 275 citations till now. The article focuses on the topics: Martensite & Austenite.read more
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An Overview of Dual-Phase Steels: Advances in Microstructure-Oriented Processing and Micromechanically Guided Design
Cemal Cem Tasan,Martin Diehl,Dingshun Yan,Marion Bechtold,Franz Roters,Lars Schemmann,Chengwu Zheng,N. Peranio,Dirk Ponge,Motomichi Koyama,Kaneaki Tsuzaki,Dierk Raabe +11 more
TL;DR: In this article, the authors provide a detailed account of these improvements, focusing specifically on microstructure evolution during processing, and expander expansion during the fabrication of dual-phase alloys.
Journal ArticleDOI
A model for the microstructure behaviour and strength evolution in lath martensite
TL;DR: In this article, a new model describing the microstructure and strength of lath martensite is introduced, where the lattice distortion energy within a lath being equal to the strain energy of the dislocation density at the lath boundaries.
Journal ArticleDOI
Nanolaminate Transformation-Induced Plasticity-Twinning-Induced Plasticity steel with Dynamic Strain Partitioning and Enhanced damage Resistance
TL;DR: In this paper, a Fe 9Mn−3Ni−1.4Al−0.01C (mass%) medium-Mn TRIP maraging steel is produced and heat-treated under different reversion conditions to introduce well-controlled variations in the austenite-martensite nanolaminate microstructure.
Journal ArticleDOI
3D structural and atomic-scale analysis of lath martensite: Effect of the transformation sequence
TL;DR: In this article, a multi-probe methodology is developed and applied to low-carbon lath martensitic model alloys to improve the fundamental understanding of the multi-scale characteristics of microstructures and their micro-mechanical properties, which is based on the joint employment of electron channeling contrast imaging (ECCI), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), atom probe tomography (APT), in conjunction with high precision and large field-of-view 3D serial sectioning.
Journal ArticleDOI
The effects of prior austenite grain boundaries and microstructural morphology on the impact toughness of intercritically annealed medium Mn steel
Jeongho Han,Alisson Kwiatkowski da Silva,Dirk Ponge,Dierk Raabe,Sang Min Lee,Young Kook Lee,Sang-In Lee,Byoungchul Hwang +7 more
TL;DR: In this article, the effects of prior austenite (γ) grain boundaries and microstructural morphology on the impact toughness of an annealed Fe-7Mn-0.5Si medium Mn steel were investigated for two different microstructure states.
References
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Bainite in Steels
TL;DR: The mechanism of the bainite transformation in steels is reviewed in this paper, with a summary of the early research and concluding with an assessment of the transformation in the context of the other reactions which occur as austenite is cooled to temperatures where it is no longer the stable phase.
Journal ArticleDOI
Tempering of steel
G. R. Speich,W. C. Leslie +1 more
TL;DR: In this article, the authors present an understanding of the processes involved in the tempering of iron-carbon martensites and how they are affected by alloying elements, and how these processes overlap and occur on such a fine scale.
Journal ArticleDOI
Electron backscattering diffraction study of acicular ferrite, bainite, and martensite steel microstructures
TL;DR: In this article, the authors examined acicular ferrite, bainite, and martensite microstructures observed in three low-alloy steels and used electron backscattering diffraction (EBSD) to assess crystallographic features.
Journal ArticleDOI
Microstructure and flow stress of polycrystals and single crystals
Niels Hansen,Xiaoxu Huang +1 more
TL;DR: In this article, a pure aluminium polycrystal having an average grain size of 300μm has been strained in tension at room temperature and the flow stress has been determined at four different strains (0.05,0.14, 0.22 and 0.34).