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Effects of a strong magnetic field on the phase stability of plain carbon steels
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This article is published in Scripta Materialia.The article was published on 2000-07-01. It has received 139 citations till now. The article focuses on the topics: Chemical stability & Phase diagram.read more
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Grain boundary engineering: historical perspective and future prospects
Tadao Watanabe,Tadao Watanabe +1 more
TL;DR: A brief introduction of the historical background of grain boundary engineering for structural and functional polycrystalline materials is presented in this article, where a new approach in terms of the grain boundary and interface engineering is discussed for the design and development of high performance materials with desirable bulk properties.
Journal ArticleDOI
In situ evidence of enhanced transformation kinetics in a medium carbon steel due to a high magnetic field
Gerard M. Ludtka,Roger A Jaramillo,Roger A. Kisner,D. M. C. Nicholson,John B Wilgen,Gail Mackiewicz-Ludtka,Peter N. Kalu +6 more
TL;DR: In this article, a medium carbon steel was cooled from 850 °C at various rates with and without a 30-T magnetic field, and the onset of thermal recalescence associated with the release of latent heat showed 70-90 °C increase, indicating acceleration in austenite decomposition.
Journal ArticleDOI
Diffusion of carbon and titanium in γ -iron in a magnetic field and a magnetic field gradient
Shinya Nakamichi,Sadahiro Tsurekawa,Yasuhiro Morizono,Tadao Watanabe,Minoru Nishida,Akira Chiba +5 more
TL;DR: In this paper, the diffusion coefficients of carbon and titanium in γ -iron were measured in a 6T magnetic field and in magnetic field gradients ranging from 30 to 45 T/m.
Journal ArticleDOI
Effect of pulsed magnetic field on microstructure of 1Cr18Ni9Ti austenitic stainless steel
TL;DR: In this paper, the effects of pulsed magnetic field on the microstructure of 1Cr18Ni9Ti austenitic stainless steel were investigated, and it was shown that during the solidification of the steel, applications of magnetic field can significantly refine its micro-structure.
Journal ArticleDOI
Microstructural features induced by a high magnetic field in a hypereutectoid steel during austenitic decomposition
YingXiao Zhang,YingXiao Zhang,Claude Esling,M. L. Gong,Grégory Vincent,Xiaotong Zhao,Liang Zuo +6 more
TL;DR: A 12-T magnetic field was introduced during the austenitic decomposition of a high carbon steel at various cooling rates as mentioned in this paper, which can reduce the amount of proeutectoid cementite, increase the lamellar spacing of pearlite and decrease the frequencies of low angle misorientations in ferrite.
References
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Book
Introduction to Magnetic Materials
B. D. Cullity,C. D. Graham +1 more
TL;DR: In this paper, the authors present materials at the practical rather than theoretical level, allowing for a physical, quantitative, measurement-based understanding of magnetism among readers, be they professional engineers or graduate-level students.
Journal ArticleDOI
A New Model Explainable for Both the Athermal and Isothermal Natures of Martensitic Transformations in Fe–Ni–Mn Alloys
TL;DR: In this paper, the effect of magnetic fields on martensitic transformations in Fe-Ni-Mn alloys has been investigated. And a new model, which is able to explain systematically for both the natures of athermal and isothermal martinsitic transformations, has been proposed.
Journal ArticleDOI
Paramagnetic Susceptibilities of Fe and Fe‐Si Alloys
Sigurds Arajs,D. S. Miller +1 more
Abstract: Paramagnetic susceptibilities of Fe and Fe‐Si alloys (575, 682, 945, 1265, 1470, 1811, 2085, and 2438 at % Si) have been measured up to 1200°C At high temperatures the paramagnetic susceptibilities of bcc Fe‐Si alloys obey the Curie‐Weiss law, possibly indicating that the contribution due to s‐d exchange interactions is small in comparison with the temperature dependent paramagnetism The effective Bohr‐magneton number of Fe from the high‐temperature region is independent of Si content up to about 14 at % Si At higher Si concentrations, gradual decrease in the effective Bohr‐magneton number occurs According to the paramagnetic susceptibility measurements, the α‐γ transition in iron takes place at 910±3°C Assuming that the critical temperatures for chemical ordering as given by Glaser and Ivanick are correct, our measurements indicate that the paramagnetic susceptibility, within the experimental error, is not influenced by the destruction of the superlattice above 13 at % of Si
Journal ArticleDOI
11 T liquid helium-free superconducting magnet
Kazuo Watanabe,Satoshi Awaji,Junji Sakuraba,K. Watazawa,Tsuginori Hasebe,Kazunori Jikihara,Yutaka Yamada,Mamoru Ishihara +7 more
TL;DR: An 11 T liquid helium-free superconducting magnet designed at 6 K in vacuum using high temperature superconding current leads was developed in this article, where the NbTi Nb 3 Sn coil was conductively cooled down from room temperature to 41 K in 40 h by two 4 K GM-cryocoolers.
Journal ArticleDOI
Effect of magnetic fields on martensitic transformations in ferrous alloys and steels.
TL;DR: In this article, a new exact equation was proposed to generally expalin the shift of Ms temperature as a function of critical magnetic field to induce martensitic transformations in those alloys, which consisted of three terms of the Zeeman energy, high field susceptibility energy and forced volume magnetostriction energy.