Now showing items 1-10 of 1007
Influence of aging on microstructure and hardness of lead-free solder alloys
Purpose: The purpose of this paper is to carry out a study of the evolution of the microstructure and the microhardness of Sn-Cu-Ag alloys from as-cast condition and under artificial isothermal aging at different temperatures ...
Microstructural Evolution of Cold-Deformed and Isothermally Treated ZA27 Alloys
(Universidade Federal de São Carlos, 2021-06)
Pure ZA27 alloys and ZA27 alloys with Cu and Mg additions were cast and deformed by compression. Samples of both alloys were heat treated at 460°C after deformation and the evolution of the microstructure as a function of ...
Magnetic structure of FexCu100-x magnetoresistive alloys produced by mechanical alloying
FexCul00-x magnetoresistive alloys were produced by mechanical alloying. X-ray diffraction shows fcc structure. The room-temperature Mössbauer spectra evolves from an asymmetrical doublet below x = 25%, to a broad magnetic ...
Giant magnetoresistive properties of FexAu100-x alloys produced by mechanical alloying
(Elsevier Science, 2001-01)
The FexAu100-x alloys were produced for the first time by mechanical alloying. Resistance of samples with iron concentrations of x = 15, 20, 25, and 30 at% were measured at 77 K under an applied field of 14 kOe. A maximum ...
Effects of Zr on the amorphization of Cu-Ni-Zr alloys prepared by mechanical alloying
(Elsevier Science SA, 2018-10-15)
This work presents the effects of high energy milling with different Ni and Zr ratios on the amorphization of ternary Cu-Ni-Zr alloys (initially, Cu-43Ni-7Zr, Cu-12Ni-31Zr, Cu-33Ni-7Zr, and Cu-12Ni-23Zr; and later, ...
Mechanical alloying of cu-xcr (x=3, 5 and 8 wt.%) AlloyJOURNAL OF ALLOYS AND COMPOUNDSJ ALLOY COMPD
(ELSEVIER SCIENCE SA, 2016)
Corrosion behavior of a β CuAlBe shape memory alloy containing stress induced martensite
(Elsevier Science, 2019-02)
The corrosion behavior of a β CuAlBe shape memory alloy containing stress-induced martensite was analyzed after 60 days of immersion in a 3.5% NaCl solution. The stress-induced martensite was retained in the sample after ...
Non-alloy/alloy transitions in the Sn/Cu(001) system: An STM, LEED and DFT study
(Elsevier Science, 2017-11-15)
We show that surface alloying during growth of Sn on Cu(001) is inhibited at temperatures below 170 K. We have studied the non-alloying surface structures that are formed starting from low Sn coverage up to 0.65 ML, finding ...
Corrosion resistance of different aluminum alloys in ethanol
Aluminum alloys with silicon and magnesium, by potentiodynamic polarization tests and Electrochemical Impedance Spectroscopy in bioethanol solution (92º - 96º), room temperature and pH 6.5, evaluating the effects of the ...
A short review on the interaction of precipitates and martensitic transitions in CuZnAl shape memory alloys
(World Scientific, 2017-02-02)
The main effects of γ non-equilibrium nanoprecipitates in CuZnAl shape memory alloys are briefly reviewed. Aspects related to the nucleation and growth of precipitates are commented on and their effect on stress induced ...