Densification and microstructural evolution of spark plasma sintered NiTi shape memory alloy

Velmurugan, C.; Senthilkumar, V.; Biswas, Krishanu; Yadav, Surekha

doi:10.1016/j.apt.2018.06.026

Cited by 26 publications

(12 citation statements)

References 30 publications

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“…Spark Plasma Sintering (SPS) has been successfully used for the densification of a wide variety of materials (ceramic [1,2], metals and alloys [3,4], polymer and composites [5,6]). Balázsi et al [7] used as first SPS to realize nanostructured steel compacts.…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Chemical Composition to the End-Properties of Ceramic Dispersed Strengthened 316L/Y2O3 Composites

Zine¹,

Balázsi²,

Balázsi³

2019

Period. Polytech. Chem. Eng.

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In this paper the influence of chemical composition to the end-properties of ceramic dispersed strengthened 316L/Y2O3 composites ceramic has been studied. Two various compositions were studied and compared to reference 316L sintered sample. These two compositions are 316L/0.33 wt% Y2O3 and 316L/1 wt% Y2O3. The high-efficient attrition milling has been used for grain size reduction and oxide distribution in the austenitic matrices. Spark Plasma Sintering (SPS) was used as fast compaction method of the milled powders in order to avoid excessive grain growth. In this work it was found that changing the chemical composition by increase of the Y2O3 addition in the composite matrix improves the milling efficiency, increases the hardness of the 316L and reduces significantly the wear rate.

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Section: Introductionmentioning

confidence: 99%

The Effect of the Chemical Composition to the End-Properties of Ceramic Dispersed Strengthened 316L/Y2O3 Composites

Zine¹,

Balázsi²,

Balázsi³

2019

Period. Polytech. Chem. Eng.

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“…4b-c). Such a mechanism may be present in powder compacts with a wide particle size distribution [12,13,38,[81][82][83], where local arrangements may produce triangular required geometry (Fig. 1d).…”

Section: Discussion: Implications and Limitationsmentioning

confidence: 99%

Particle curvature effects on microstructural evolution during solid-state sintering: phenomenological insights from phase-field simulations

Choudhuri

Blake

2021

J Mater Sci

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Local curvatures have a profound influence on sintered microstructure. Here, using phase-field simulations, particle curvature effects were phenomenologically investigated by using geometrical configurations of two, three, and four particles, and by systematically varying particle curvatures. Some geometries, involving two, three and four particles, exhibited the expected smooth necklength evolution, where the maximum neck length was determined by grain boundary (GB) energy (c GB ) rather than surface energy (c S ). In contrast, triangular arrangement of particles with unequal radii manifested a secondary necking event in form of a step during neck evolution. The secondary necking event coincided with internal pore collapse, and only specific range of particle radius ratios manifested such a mechanism. c S played a dominant role in triggering the secondary necking event, while c GB determined the remnant microstructure. Broadly, the geometries employed here allow us to computationally examine the sintering of particles that display wide variation in shapes and size distributions.

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“…Conventional sintering (CS), hot isostatic pressing (HIP), spark plasma sintering (SPS), selective laser melting (SLM), Metal injection molding (MIM), microwave sintering (MS), and self-propagating high-temperature synthesis (SHS), are some of the more commonly used PM processes utilized for the fabrication of NiTi products. [103][104][105][106][107] Conventional sintering. Conventional sintering generally involves the elemental Ni and Ti powders being pressed into a compact, before being heated or sintered below the absolute melting temperature of the material.…”

Section: Powder Metallurgymentioning

confidence: 99%

Section: Synthesis and Manufacturing Of Smasmentioning

confidence: 99%

The role of NiTi shape memory alloys in quality of life improvement through medical advancements: A comprehensive review

Nair

Radhika

2022

Proc Inst Mech Eng H

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The significance of advanced smart materials in recent technological research and advancement is apparent from its extensive use in present day devices and instruments. Of the various smart materials in use today, the fascinating category of shape memory alloys (SMAs) is equipped with the ability to return to a previously memorized shape under certain thermomechanical or magnetic stimuli. The unique property of shape memory effect and superelasticity displayed by these materials along with good biocompatibility and corrosion resistance make them ideal for biomedical applications. The various applications of SMAs in surgical instruments, surgical implants, and assistive and rehabilitative devices have significant effect on the day to day life of people in the present age. Majority of these biomedical devices belong to the orthodontic, orthopedic, or surgical fields. Other remarkable applications of SMAs such as in the production of prostheses and orthoses designed through the biomimetic approach are also highly influential in improving the quality of life. The present paper provides an overview of the various properties of shape memory alloys and their applications in the biomedical field over the years, that have had a significant impact on the realm of medical science.

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Densification and microstructural evolution of spark plasma sintered NiTi shape memory alloy

Cited by 26 publications

References 30 publications

The Effect of the Chemical Composition to the End-Properties of Ceramic Dispersed Strengthened 316L/Y2O3 Composites

The Effect of the Chemical Composition to the End-Properties of Ceramic Dispersed Strengthened 316L/Y2O3 Composites

Particle curvature effects on microstructural evolution during solid-state sintering: phenomenological insights from phase-field simulations

The role of NiTi shape memory alloys in quality of life improvement through medical advancements: A comprehensive review

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