Vickers micro-hardness variation during change in concentration of constituent elements in Ni50–xFexMn30Sn20–yIny, Heusler alloys

IF 1.9 Q3 ENGINEERING, MANUFACTURING

Manufacturing Review Pub Date : 2022-01-01 DOI:10.1051/mfreview/2022002

Sandeep Nambiar S., Murthy B.R.N., S. S, Prasanna A.A., A. J

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引用次数: 1

Abstract

Present work is on Heusler alloys of the sequence Ni50–xFexMn30Sn20–yIny, were prepared in order to investigate the relationship between microstructure and mechanical property. The work represents the variations in the hardness of the alloy when the component elements are changed. Alloys show Vickers hardness HV = 3.5 GPa at x = 2 and y = 4. At x = 4 and y = 8, alloy exhibits an L10 tetragonal structure, whereas at x = 3 and y = 6 L21 austenite phase structure is observed. Interface piling up occurs which greatly reduces fracture propagation and dislocation at neighboring interfaces. Large piled-up interfaces available in the martensite phase due to the sub-strips significantly contribute this process resulting in large hardness value. In spite of thicker laminates in the austenite phase, the alloy exhibits higher hardness than martensite phase or even the composite. Hardness is particularly low in the martensitic phase (x = 4, y = 8), which is produced owing to interfacial motion. The hardness value falls as the Sn concentration increases due to weak pinning between the strips. A drastic increase in hardness of 3.5 GPa has been observed when x = 2 and y = 4.

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Ni50-xFexMn30Sn20-yIny, Heusler合金中组成元素浓度变化的维氏显微硬度变化

本文制备了Ni50-xFexMn30Sn20-yIny系列Heusler合金，以研究其显微组织与力学性能之间的关系。功表示合金的组成元素改变时硬度的变化。合金在x = 2和y = 4时的维氏硬度HV = 3.5 GPa。在x = 4和y = 8时，合金表现为L10型四方相组织，而在x = 3和y = 6时，合金表现为L21型奥氏体相组织。界面发生堆积，大大减少了相邻界面的断裂扩展和位错。由于子带的存在，马氏体相中存在大量堆积界面，这对这一过程有很大的促进作用，导致硬度值很大。尽管奥氏体相层板较厚，但合金的硬度高于马氏体相，甚至高于复合材料。由于界面运动，马氏体相(x = 4, y = 8)的硬度特别低。随着锡浓度的增加，钢带间的钉住作用减弱，硬度值随之下降。当x = 2和y = 4时，观察到硬度急剧增加到3.5 GPa。

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来源期刊

Manufacturing Review ENGINEERING, MANUFACTURING-

CiteScore

5.40

自引率

12.00%

发文量

审稿时长

8 weeks

期刊介绍： The aim of the journal is to stimulate and record an international forum for disseminating knowledge on the advances, developments and applications of manufacturing engineering, technology and applied sciences with a focus on critical reviews of developments in manufacturing and emerging trends in this field. The journal intends to establish a specific focus on reviews of developments of key core topics and on the emerging technologies concerning manufacturing engineering, technology and applied sciences, the aim of which is to provide readers with rapid and easy access to definitive and authoritative knowledge and research-backed opinions on future developments. The scope includes, but is not limited to critical reviews and outstanding original research papers on the advances, developments and applications of: Materials for advanced manufacturing (Metals, Polymers, Glass, Ceramics, Composites, Nano-materials, etc.) and recycling, Material processing methods and technology (Machining, Forming/Shaping, Casting, Powder Metallurgy, Laser technology, Joining, etc.), Additive/rapid manufacturing methods and technology, Tooling and surface-engineering technology (fabrication, coating, heat treatment, etc.), Micro-manufacturing methods and technology, Nano-manufacturing methods and technology, Advanced metrology, instrumentation, quality assurance, testing and inspection, Mechatronics for manufacturing automation, Manufacturing machinery and manufacturing systems, Process chain integration and manufacturing platforms, Sustainable manufacturing and Life-cycle analysis, Industry case studies involving applications of the state-of-the-art manufacturing methods, technology and systems. Content will include invited reviews, original research articles, and invited special topic contributions.