X-ray analysis of the Cu-Zn alloys system subjected to ECAP and subsequent rolling

Solidification properties and microstructure of six as-cast Sn–Bi–Zn alloys with 80 at.% of Sn and variable contents of Bi and Zn were experimentally investigated using the scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS) and differential scanning calorimetry (DSC). The experimentally obtained results were compared with predicted phase equilibria according to the calculation of phase diagram (CALPHAD) method and by the Scheil solidification simulation.

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In Situ Synchrotron Analysis of Twinning Stresses in an Aged Mg-4.5Zn Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.941.1579 ◽

2018 ◽

Vol 941 ◽

pp. 1579-1584 ◽

Cited By ~ 1

Author(s):

Mahmoud Reza Ghandehari Ferdowsi ◽

Jun Wang ◽

Sitarama R. Kada ◽

Zhi Yang Wang ◽

Peter A. Lynch ◽

...

Keyword(s):

Yield Strength ◽

Volume Fraction ◽

X Ray Diffraction ◽

Aged Condition ◽

X Ray ◽

Peak Broadening ◽

Strong Relation ◽

Twin Volume Fraction ◽

Zn Alloys

Aging increases the yield strength of aged Mg-Zn alloys. The effect of aging on the stress required for twinning is examined using in-situ transmission based synchrotron X-ray diffraction. The as extruded material was aged at variety of temperatures for different times. It is found that increasing sample diameter (thickness) results in peak broadening. The data are analysed to establish the evolution of twin volume fraction with stress. Results indicated an increase in twinning stress at 10% twin volume fraction in aged samples in comparison with non-aged condition. The investigation showed a strong relation between the macroscopic yield stress and the twinning stress (at 10% twin volume fraction).

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Effect of Ga on the Oxide Film Structure and Oxidation Resistance of Sn–Bi–Zn Alloys as Heat Transfer Fluids

Materials ◽

10.3390/ma13235461 ◽

2020 ◽

Vol 13 (23) ◽

pp. 5461

Author(s):

Qingmeng Wang ◽

Xiaomin Cheng ◽

Zhi Liu ◽

Zean Lv ◽

Qianju Cheng

Keyword(s):

Oxide Film ◽

Oxidation Resistance ◽

Photoelectron Spectroscopy ◽

Film Surface ◽

Film Structure ◽

Elemental Distribution ◽

X Ray ◽

Heat Transfer Fluids ◽

Air Atmosphere ◽

Zn Alloys

The effect of gallium on the oxide film structure and overall oxidation resistance of low melting point Sn–Bi–Zn alloys was investigated under air atmosphere using thermogravimetric analyses. The liquid alloys studied had a Ga content of 1–7 wt.%. The results showed that the growth rates of the surface scale formed on the Sn–Bi–Zn–Ga alloys conformed to the parabolic law. The oxidation resistance of Sn–Bi–Zn alloys was improved by Ga addition and the activation energies increased from 12.05 kJ∙mol−1 to 22.20 kJ∙mol−1. The structure and elemental distribution of the oxide film surface and cross-section were found to become more complicated and denser with Ga addition. Further, the results of X-ray photoelectron spectroscopy and X-ray diffraction show that Ga elements accumulate on the surface of the liquid metal to form oxides, which significantly slowed the oxidation of the surface of the liquid alloy.

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The Solvus Curve for Guinier–Preston Zones in Al–Zn Alloys: A Diffuse X-Ray Study

Metal Science Journal ◽

10.1179/msc.1969.3.1.23 ◽

1969 ◽

Vol 3 (1) ◽

pp. 23-25 ◽

Cited By ~ 17

Author(s):

T. Niklewski ◽

P. Spiegelberg ◽

K. Sunbulli

Keyword(s):

X Ray ◽

Zn Alloys

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Analysis of the Solid Solution Microstructure of (HF) Al-Zn Alloys

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.303-304.39 ◽

2010 ◽

Vol 303-304 ◽

pp. 39-53 ◽

Cited By ~ 4

Author(s):

H. Bedboudi ◽

A. Bourbia ◽

M. Draissia ◽

S. Boulkhessaim ◽

M.Y. Debili

Keyword(s):

High Frequency ◽

Vickers Microhardness ◽

Induction Melting ◽

Strengthening Mechanisms ◽

X Ray Diffraction ◽

Microstructural Characteristics ◽

X Ray ◽

Microhardness Testing ◽

Rapidly Solidified ◽

Zn Alloys

Rapidly solidified Al-Zn alloys with Zn contents ranging up to 50 wt.% were made under vacuum, by high-frequency (HF) induction melting, from compacted mixture targets of Al and Zn of fine (99.99 % purity) elemental powders. The microstructural characteristics and strengthening mechanisms were investigated. The crystallographic microstructures were characterized by means of X-ray diffraction (XRD) analyses and optical microscopy observations as well as Vickers microhardness testing. Detailed overviews of alloying solubility of zinc in aluminium were given. Extensive solid solutions of CFC Al were found in the (HF) Al-Zn alloys, and a higher Vickers microhardnesses compared to that of pure (HF) aluminium.

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