Journal ArticleDOI
Mechanical properties and microstructural features of AISI 4340 high-strength alloy steel under quenched and tempered conditions
Woei-Shyan Lee,Tzay Tian Su +1 more
TLDR
In this article, the microstructures of AISI 4340 high strength alloy steel under different tempering conditions are investigated, and the results indicate that the mechanical properties and microstructural features are affected significantly by tempering temperature and holding time.About:
This article is published in Journal of Materials Processing Technology.The article was published on 1999-03-15. It has received 222 citations till now. The article focuses on the topics: Tempering & Martensite.read more
Citations
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Journal ArticleDOI
The mechanisms of chip formation in machining hardened steels
John James Barry,Gerald Byrne +1 more
TL;DR: In this article, the formation of saw-tooth chips is attributed to the operation of thermally softened micro-shear zones, which, it is suggested, are a precursor to adiabatic shear initiation.
Journal ArticleDOI
Compliant hexagonal periodic lattice structures having both high shear strength and high shear strain
Jaehyung Ju,Joshua D. Summers +1 more
TL;DR: In this paper, the elastic limits of hexagonal honeycombs including the ones having negative Poisson's ratios (NPR) are explored with various cell geometries under simple shear loading.
Journal ArticleDOI
Effect of laser clad repair on the fatigue behaviour of ultra-high strength AISI 4340 steel
Shi Da Sun,Qianchu Liu,Milan Brandt,Vladimir Luzin,Ryan Cottam,Madabhushi Janardhana,Graham Clark +6 more
TL;DR: In this paper, the fatigue behavior of an ultra-high strength steel (>1800 MPa) was evaluated to assess the potential of using laser cladding as a repair tool for such steels in aeronautical structural applications.
Journal ArticleDOI
Effect of heat treatment on mechanical and ballistic properties of a high strength armour steel
Pradipta Kumar Jena,Bidyapati Mishra,M. RameshBabu,Arvindha Babu,Avijit Singh,K. Sivakumar,T. Balakrishna Bhat +6 more
TL;DR: In this article, an ultra high strength armour steel was austenatised at 910°C followed by tempering at 200, 300, 400, 500 and 600°C after heat treatment the properties of tensile strength, ductility, charpy impact strength, hardness and microstructure were evaluated from the mechanical tests and metallographic analysis respectively.
Journal ArticleDOI
Effect of hardness, microstructure, normal load and abrasive size on friction and on wear behaviour of 35NCD16 steel
TL;DR: Wear and friction properties depend on many parameters such as normal load and material hardness as mentioned in this paper, however, coupled contributions of microstructure and abrasive particle size are less investigated.
References
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Book
Materials Science and Engineering: An Introduction
TL;DR: In this paper, the International System of Units (SI) is used to measure the properties of materials and their properties in the context of materials science and engineering, including properties of metal alloys.
Journal ArticleDOI
Effect of Strain Rate Upon Plastic Flow of Steel
Clarence Zener,J. H. Hollomon +1 more
TL;DR: In this paper, an experiment was designed to check the equivalence of the effects of changes in strain rate and in temperature on the stress-strain relation in metal deformation.
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
Crystal structure and morphology of the carbide precipitated from martensitic high carbon steel during the first stage of tempering
Y Hirotsu,S. Nagakura +1 more
TL;DR: A martensitic steel containing 1.13 wt. %C was tempered at 120°C for 1-100 days and the structure and morphology of precipitated carbide were studied by electron microscopy and selected area diffraction as discussed by the authors.
Journal ArticleDOI
Mechanisms of tempered martensite embrittlement in low alloy steels
R. M. Horn,Robert O. Ritchie +1 more
TL;DR: In this article, the authors investigated the role of interlath films of retained austenite in TME and found that the embrittlement was concurrent with the inter-lath precipitation of cementite during tempering and the consequent mechanical instability of retained Austenite during subsequent loading.