Formation of Bulk Pd-Cu-Si-P Glass with Good Mechanical Properties
نویسندگان
چکیده
Glassy Pd85 xCuxSi10P5 (x 1⁄4 5{12 at%) alloys with a supercooled liquid region ( Tx) of 51–73K were synthesized despite the low metalloid content. The glassy Pd79Cu6Si10P5 alloy exhibits the largest Tx of 73K in the present alloy system and its critical diameter for glass formation reaches 5mm by copper mold casting. For the bulk glassy Pd79Cu6Si10P5 alloy, the Young’s modulus, compressive yield strength and maximum compressive strength are 82GPa, 1475MPa and 1575MPa, respectively. Distinct compressive plastic strain of 3.5% and a vein pattern morphology on the fracture surface indicate the ductile nature of the bulk glassy Pd-Cu-Si-P alloy.
منابع مشابه
Effect of Minor Au Addition on Glass-Forming Ability and Mechanical Properties of Pd--Cu--Au--Si--P Alloys
The glass-forming ability (GFA), thermal stability and mechanical properties of bulk glassy Pd79Cu6 xAuxSi10P5 (x 1⁄4 0{6 at%) alloys were studied. The results revealed that the minor substitution of Au for Cu strongly affects the thermal stability and GFA of Pd–Cu–Au–Si–P alloys. The alloy in which 2 at% Au was added to substitute Cu (Pd79Cu4Au2Si10P5) exhibits the broadest supercooled liquid ...
متن کاملTi-based Bulk Metallic Glasses for Biomedical Applications
Biomedical materials can improve the life quality of a number of people each year. The range of applications includes such as joint and limb replacements, artificial arteries and skin, contact lenses, and dentures. So far the accepted biomaterials include metals, ceramics and polymers. The metallic biomaterials mainly contain stainless steel, Co-Cr alloys, Titanium and Ti-6Al-4V. Recently, bulk...
متن کاملA Comparative Study on the Microstructure and Mechanical Properties of Al-Si-Cu/1wt %NCP Composites after T6 Heat Treatment
In this article, microstructural characteristics and mechanical properties of Al-Si-Cu/NCP composites were evaluated. Reinforced nanocomposites with 1 wt% nano-clay were fabricated by the method of the stir casting. Stirring times and temperatures were variable parameters to produce specimens. Consequently, the effect of a T6 heat treatment, which contained solutioning at 490 ºC for ...
متن کاملNew Pd-Based Bulk Glassy Alloys with High Glass-Forming Ability and Large Supercooled Liquid Region
With the aim of developing a new bulk glassy alloy which can be applied to biomedical applications, we examined glass-forming ability and mechanical properties of Ni-free glassy alloys in Pd50 xPtxCu30P20 system. As a result, the best glass-forming composition is located at Pd35Pt15Cu30P20, and the alloy can be formed into bulk glassy rods with diameters of up to at least 30mm by fluxed water q...
متن کاملA NEW GENERATION OF OXYNITRIDE GLASSES CONTAINING FLUORINE
Oxynitride glasses are found as grain boundary phases in silicon nitride ceramics. They are effectively alumino-silicate glasses in which nitrogen substitutes for oxygen in the glass network, and this causes increases in glass transition and softening temperatures, viscosities (by two to three orders of magnitude), elastic moduli and microhardness. Calcium silicate-based glasses containing fluo...
متن کامل