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ball milling and shape memory alloys

Jul 11, 2015 · Tantalum–titanium alloys have widespread potential in biomedical applications due to their superior biocompatibility, favorable mechanical properties, high corrosion resistance, and ability to exhibit shape memory behavior. However, this system is plagued by processing difficulties due to significant differences in melting temperatures, specific weights, and vapor pressures of Ta and Ti

alireza nouri | university of toronto

The alloy was synthesized using high-energy ball milling for different periods of time, and the porous Ti–16Sn–4Nb alloy was fabricated by using a space holder sintering process. The resultant powder particles, bulk, and porous samples were characterized using a scanning electron microscope (SEM), laser particle-size analyzer, chemical

effect of aging andball millingon the phase

Abstract. This study investigated phase transformation of Ni50Mn25Ga17Cu8-xZrx (x = 0, 4, 8) alloys after aging and ball milling. For the Cu4Zr4 and Zr-8 dual phase alloys, aging has enhanced magnetic susceptibility and magnetic exchange of the matrix, resulting in an increase of the Curie temperature of austenitic matrix

machining ofshape memory alloys| springerlink

Abstract. Shape memory alloys (SMAs) are considered as difficult-to-machine materials. This chapter sheds light on machinability aspects of SMAs and presents a comprehensive discussion on advanced and sustainable strategies and techniques for machining SMAs

applications forshape memory alloys

Shape memory alloys are inserted into the golf clubs. These inserts are super elastic, which keep the ball on the clubface longer. As the ball comes into contact with the clubface, the insert experiences a change in metallurgical structure. The elasticity increases the spin on the ball, and gives the ball …

smart materials stem from nature| machine design

Shape-memory alloys (SMAs) ... Ball-milling breaks down polystyrene through a series of chemical events which mechanically cuts apart the macromolecules. This generates free radicals which are

shape memory alloy machining- thomasnet

Machining: Shape Memory Alloy manufacturers, service companies and distributors are listed in this trusted and comprehensive vertical portal. The comprehensive directory provides access to full contact and ability information for sourcing professionals, engineers and researchers wishing to get information on Machining: Shape Memory Alloy

ti-nb alloy

Nb shape memory alloy processed by equal-channel angular pressing (ECAP) at 823K have been investigated. The effect of multi-passes ECAP and aging on the martensitic transformation temperature, shape memory effect and superelastic recovery strains of Ti-25at.%Nb alloy have been analyzed. ... The critical ball milling behavior of ductile Ti- Nb

powder metallurgy: an alternative for femnsicrnishape

Jul 31, 2020 · Introduction. Amongst Intelligent Materials, Shape Memory Alloys (SMAs) form a distinctive group able to restore their original shape by heating or magnetic field application (Ma and Karaman, 2010).Within SMAs class, NiTi-based, CuZn-based, CuAl-based and FeMnSi-based alloys have become of commercial use (Sun et al., 2012).The interest for FeMnSi-based SMAs is due to their lower …

ti-nishape-memory alloy- stanford materials

Near-atomic ratio of Ti-Ni alloy was the first material to be used as a shape-memory alloy. Due to its excellent shape memory function, good heat and corrosion resistance, high strength, unique thermal and fatigue resistance, high biocompatibility and high damping characteristics, it is …

advanced engineering materials: vol 22, no 7

Jul 13, 2020 · A database tool is developed for archiving, exploring and interchanging shape memory materials data including shape memory alloys, superelastic alloys, magnetic shape memory alloys, shape memory polymers and shape memory ceramics, as described in the article, number 1901370 by Othmane Benafan and co‐workers. The tool provides statistical information dating back to the 1950s, …

effect of ta additions on the microstructure, damping, and

The influence of Ta additions on the microstructure and properties of Cu-Al-Ni shape memory alloys was investigated in this paper. The addition of Ta significantly affects the green and porosity densities; the minimum percentage of porosity was observed with the modified prealloyed Cu-Al-Ni-2.0 wt.% Ta. The phase transformation temperatures were shifted towards the highest values after Ta was

home |materials

Advanced titanium alloys – where aerospace, bio-implant, shape memory alloys, and micro-actuator systems are targeted. Novel processing of advanced materials – where laser cladding, diffusi on alloying, and cryogenic milling are investigated. Multi-Materials Laboratory

phase composition and microstructure of new titanbzr

The study presents the results of the influence of high-energy ball-milling time on the structure of the new β-type Ti–Ta–Nb–Zr alloys for biomedical applications.Initial elemental powders were mechanically alloyed in a planetary high-energy ball mill at different milling times (from 10 to 90 h)

evaluation of mechanical alloying to obtain cu-al-nbshape

The technical viability of preparing a Cu-Al-Nb shape memory alloy by high energy ball milling in a planetary mill has been evaluated. The alloy Cu-13Al-2Nb (wt. (%)) was prepared by mixing pure elemental powders. A ball-to-powder weight ratio of 6:1 and rotation rate of 150 rpm in argon atmosphere were the main processing parameters. The

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