scholarly journals Effect of Rare-Earth Metals Addition on Microstructure and Properties of Selected Copper Alloys

2014 ◽  
Vol 59 (2) ◽  
pp. 641-648 ◽  
Author(s):  
Z. Rdzawski ◽  
W. Głuchowski ◽  
J. Stobrawa ◽  
J. Sobota
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Cold Working ◽  
Copper Alloys ◽  
Rare Earth Metals ◽  
Tension Test ◽  
Metal Working ◽  
Electron Backscattered Diffraction ◽  
Microstructure And Properties ◽  
Scanning Electron

Abstract Effect of addition of rare earth metals on microstructure and properties of copper alloys after casting, after cold working and after heat treatment was studies in this paper. Methodology consisted of microstructure investigations by optical microscopy and scanning electron microscopy. In addition, distribution of alloying elements and electron backscattered diffraction results (EBSD) were presented. The mechanical properties of a wire after tension test and after hardness measurements were described. Electrical conductivity test was performed using Foerster Sigmatest and Thomson bridge. Analysis of the microstructure and mechanical properties of investigated alloys after casting and after metal working showed possibility to produce materials with preferred set of functional properties.

Effect of Rare Earth La Modification on Microstructure and Properties of ZL101 Alloy

2011 ◽  
Vol 675-677 ◽  
pp. 651-654 ◽  
Author(s):  
Xiu Mei Zhang ◽  
Zhi Ming Shi ◽  
Rui Ying Zhang
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Brinell Hardness ◽  
Optical Microscope ◽  
Microstructure And Properties ◽  
Microstructure And Mechanical Properties ◽  
Small Load ◽  
La Modification ◽  
Rare Earth La ◽  
Scanning Electron

In this paper, rare earth La modifying ZL101 alloy was studied by using of optical microscope, scanning electron microscopy, universal materials tester and small-load Brinell hardness. The influence of T6 heat treatment of the alloy’s microstructure and properties was also studied. The results show that microstructure and mechanical properties of the alloy have much obvious modification effect at modification temperature (690°C). The microstructure and mechanical properties are improved remarkably when La content is up to 0.15wt%.

Effect of the Neodymium Content on Mechanical Properties of the Electro-Brush Plated Nano-Al2O3/Ni Composite Coating

2012 ◽  
Vol 525-526 ◽  
pp. 277-280
Author(s):  
Guo Jin ◽  
Xiu Fang Cui ◽  
Er Bao Liu ◽  
Qing Fen Li
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Composite Coating ◽  
Nanoindentation Test ◽  
X Ray Diffraction ◽  
X Ray ◽  
Small Cracks ◽  
Scanning Electron

The effect of the neodymium content on mechanical properties of the electro-brush plated nanoAl2O3/Ni composite coating was investigated in this paper. The microstructure and phase structure were studied with scanning electron microscope (SEM) and X-ray diffraction (XRD). The hardness and abrasion properties of several coatings with different neodymium content were studied by nanoindentation test and friction / wear experiment. Results show that the coatings are much finer and more compact when the neodymium was added, and the hardness and abrasion property of the coatings with neodymium were improved obviously. Besides, the small cracks conduced by the upgrowth stress in the coatings were ameliorated when the rare earth neodymium was added. The improvement mechanism was further discussed.

scholarly journals Effects of Zr, Y on the Microstructure and Properties of As-Cast Cu-0.5Y-xZr (wt.%) Alloys

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1084
Author(s):  
Dong Liang ◽  
Ning Wang ◽  
Yuxiang Wang ◽  
Zhenjie Liu ◽  
Ying Fu
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Tensile Strength ◽  
Copper Alloys ◽  
Testing Machine ◽  
Elongation Rate ◽  
Nominal Composition ◽  
Microstructure And Properties ◽  
Universal Material Testing Machine ◽  
Material Testing Machine

In this paper, the microstructure and properties of as-cast Cu-Y-Zr alloys with different Zr content were studied in order to investigate whether the precipitates in copper alloys would interact with each other by adding Y and Zr simultaneously. As-cast Cu-0.5Y-xZr (wt.%, x = 0.05 and 0.1, nominal composition) alloys were prepared by vacuum melting in this study. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and transmission electron microscopy (TEM) were used to observe the microstructure of the alloys. The mechanical properties of the alloys were tested by universal material testing machine at room temperature. The effects of Zr content on the microstructure and mechanical properties of the alloys were explored. As shown by the research results, in the as-cast Cu-0.5Y-xZr (wt.%) alloys, the precipitated phase was the Cu5Y/Cu5Zr phase and ranged from 10 nm to 70 nm in size; when the Zr content increased from 0.05 wt.% to 0.1 wt.%, both the tensile strength and elongation rate of the alloys increased; when the Zr content was 0.1 wt.%, the tensile strength was 225 MPa and the elongation rate was 22.5%.

Effect of Rare Earth Metals on the Mechanical Properties and Fractography of Al–Si-Based Alloys

2019 ◽  
Vol 14 (1) ◽  
pp. 108-124 ◽  
Author(s):  
M. F. Ibrahim ◽  
M. H. Abdelaziz ◽  
A. M. Samuel ◽  
H. W. Doty ◽  
F. H. Samuel
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Rare Earth Metals

scholarly journals The Influence Of The Rare Earth Metals Modification On The Fracture Toughness Of G17CrMo5-5 Cast Steel At Low Temperatures

2015 ◽  
Vol 60 (2) ◽  
pp. 773-777 ◽  
Author(s):  
I. Dzioba ◽  
J. Kasińska ◽  
R. Pała
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Rare Earth ◽  
Low Temperatures ◽  
Cast Steel ◽  
Rare Earth Metals ◽  
Positive Influence ◽  
Reference Temperature ◽  
Brittle To Ductile Transition ◽  
The Rare Earth

Abstract This paper presents the influence of the rare earth metals (REM) modification on mechanical properties and fracture toughness of G17CrMo5-5 cast steel at low temperatures. The REM was in the form of mishmetal. The research has been performed on serial (several) industrial melts. The fracture toughness values of unmodified and modified cast steel at the temperature range from −80°C to 20°C were tested. The reference temperatures of the brittle-to-ductile transition, TQ, for both unmodified and modified cast steel were determined. The positive influence of the modification by REM on the fracture toughness and the reference temperature TQ are shown.

Mechanical properties of commercial steels with rare-earth metals

1970 ◽  
Vol 12 (3) ◽  
pp. 211-214 ◽  
Author(s):  
A. N. Gladkikh ◽  
V. N. Gurashov ◽  
V. A. Skudnov ◽  
L. D. Sokolov
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Rare Earth Metals

Effects of Rare Earth Addition on the Inclusions and Mechanical Properties of 2205 Duplex Stainless Steel

2012 ◽  
Vol 503-504 ◽  
pp. 463-468 ◽  
Author(s):  
Xiao Liu ◽  
Long Mei Wang
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Rare Earth ◽  
Impact Toughness ◽  
Duplex Stainless Steel ◽  
Rare Earth Metals ◽  
Transverse Impact ◽  
Metallographic Examination ◽  
2205 Duplex Stainless Steel ◽  
Reduction Of Area

The effects of rare earth metals on the inclusions and the mechanical properties of 2205 duplex stainless steel were studied by metallographic examination, scanning electron microscope (SEM) and energy spectrum analysis. The results show that the morphologies and sizes of non-metallic inclusions in 2205 duplex stainless steel are changed, and rare earth metals played a very good role of modifying inclusions. The fracture mode of 2205 duplex stainless steel is typical cleavage fracture, but quasi-cleavage and dimple fracture after adding RE into the steel, and the spherical inclusions of rare earth oxysulfide in the dimple are the main factors for this transformation. The transverse impact toughness of 2205 duplex stainless steel is improved obviously by RE. In comparison with 2205 duplex stainless steel without RE, the transverse impact toughness of 2205 duplex stainless steel with RE is increased 20.49% at -40°C, and the room temperature strength are improved, the elongation and reduction of area have been improved 11.67%, 24.55% respectively.

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