Journal ArticleDOI
Effect of Nb-Mo additions on precipitation behaviour in V microalloyed TRIP-assisted steels
Erfan Abbasi,W.M. Rainforth +1 more
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In this paper, the microstructural evolution and precipitation behavior of Nb-V-Mo and single V containing transformation-induced plasticity-assisted steels with an acicular/bainitic ferrite matrix were investigated by a heat treatment up to the austenite formation range.Abstract:
The microstructural evolution and precipitation behaviour of Nb-V-Mo and single V containing transformation-induced plasticity-assisted steels with an acicular/bainitic ferrite matrix were investigated by a heat treatment up to the austenite formation range. It was found that during the heating stage the acicular/bainitic ferrite matrix resisted recrystallisation, while cementite and martensite were decomposed and austenite was formed in the acicular/bainitic ferrite. Both Nb-V-Mo and V containing steels after the heat treatment showed a microstructure consisting of a polygonal ferrite matrix with small islands of pearlite. During these transformations, the microscopy observations showed that 0.04 wt% Nb and 0.08 wt% Mo additions to the 0.16 wt% V microalloyed steel considerably reduced the growth-coarsening of microalloy precipitates.read more
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A comparison of microstructure and mechanical properties of low-alloy-medium-carbon steels after quench-hardening
TL;DR: In this paper, the microstructural characteristics of three medium carbon steels, namely MnCrB, NiCrSi and NiCrMoV containing steels are investigated when the steels were hardened by quenching in water or oil from different austenitisation temperatures (i.e. 850, 900 and 950°C).
Journal ArticleDOI
Microstructural Characteristics and Mechanical Properties of Low-Alloy, Medium-Carbon Steels After Multiple Tempering
TL;DR: In this article, the microstructure and mechanical properties of NiCrMoV-and NiCrSi-alloyed medium carbon steels were investigated after multiple tempering.
Journal ArticleDOI
Comparative Effect of Mo and Cr on Microstructure and Mechanical Properties in NbV-Microalloyed Bainitic Steels
TL;DR: In this paper, the authors investigated the microstructure and mechanical properties of bainitic steels microalloyed with Cr, Mo, Nb and V. They found that Mo has a more pronounced effect of Mo on precipitation than on phase balance.
Journal ArticleDOI
Effects of vanadium content on the carbides transformation and strengthening mechanism of MPS700V hot-work die steel at room and elevated temperatures
Zunjun Zhang,Jishan Zhang,Yong Lian,Minyu Ma,Chao Zhao,Huanyu Ye,Gaojie Li,Cheng Zhang,Jinfeng Huang +8 more
TL;DR: In this paper, the effects of vanadium content on the microstructural and mechanical properties of a newly developed hot-work die steel (MPS700V) at room and elevated temperatures have been investigated.
Journal ArticleDOI
Deformation behaviour of novel medium carbon bainitic steels with different retained austenite characteristics designed by the sparse mixed regression model
TL;DR: In this paper , a new concept for the alloy design of advanced structural steels was figured out with the experimental elaboration of deformation behaviour in two novel medium carbon bainitic steels proposed sparse mixed regression model.
References
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Book
Recrystallization and Related Annealing Phenomena
F.J. Humphreys,M. Hatherly +1 more
TL;DR: In this paper, the authors discuss the extent to which we are able to formulate quantitative, physically-based models which can be applied to metal-forming processes, and the subjects treated in this book are all active research areas and form a major part of at least four regular international conference series.
Book
Physical Metallurgy Principles
TL;DR: Physical Metallurgy Principles as mentioned in this paper is intended for use in an introductory course in physical metallurgy and is designed for all engineering students at the junior or senior level and is largely theoretical, but covers all aspects of physical metelurgy and behavior of metals and alloys.
Book
Steels, Microstructure and Properties
TL;DR: In this article, the authors studied the effects of alloying elements in iron-carbon alloys and the formation of martensite, bainite reaction and acicular ferrite reaction.
Book
The Physical Metallurgy of Microalloyed Steels
TL;DR: In this article, the authors provide a substantial background to microalloyed steels with a wide selection of applications, some of which are very recent, and a well-illustrated practical guide.