Alternating-magnetic-field induced enhancement of diffusivity in Ni-Cr alloys

Autor:	Markus Rettenmayr, Shengya He, Yunbo Zhong, Hannes Engelhardt, Chuanjun Li, Zhongming Ren, Xi Li, Tongjun Zhan, Weidong Xuan
Jazyk:	angličtina
Rok vydání:	2017
Předmět:	Diffraction Work (thermodynamics) Multidisciplinary Materials science Condensed matter physics Alloy lcsh:R lcsh:Medicine 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Thermal diffusivity 01 natural sciences Article Magnetic field Condensed Matter::Materials Science 0103 physical sciences engineering lcsh:Q Diffusion (business) Dislocation 010306 general physics 0210 nano-technology lcsh:Science Intensity (heat transfer)
Zdroj:	Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017) Scientific Reports
ISSN:	2045-2322
DOI:	10.1038/s41598-017-18500-w
Popis:	For applying an alternating magnetic field (AMF) in materials processing it is of high significance to understand the physical mechanisms behind the change in diffusivity in the AMF. In this work, the effect of the AMF on interdiffusion in a Ni-Cr alloy was investigated with a diffusion couple. The interdiffusion coefficient was found to increase with increasing AMF intensity. The faster diffusivity is a consequence of the enhancement of the dislocation density in the diffusion couples that was confirmed by the broadening of X-ray diffraction peaks. The higher dislocation density is attributed to the magnetoplastic effect (MPE). Theoretical considerations on the relation of MPE, dislocation density and diffusivity are in agreement with the experimental results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::befe1ececb0fef97c452d0d22e0b3397 http://link.springer.com/article/10.1038/s41598-017-18500-w Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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