Phase Formation of Mo- and Cr-Rich Compounds in an Al–Si Cast Alloy

2021 ◽  
pp. 105-110
Author(s):  
P. Decker ◽  
J. Steglich ◽  
A. Kauws ◽  
A. Kiefert ◽  
L. Marzoli ◽  
...  
Keyword(s):  
Phase Formation ◽  
Cast Alloy

Characterization of reactive phase formation in sputter-deposited Ni/Al multilayer thin films using TEM

1996 ◽  
Vol 54 ◽  
pp. 1000-1001
Author(s):  
G. Lucadamo ◽  
K. Barmak ◽  
C. Michaelsen
Keyword(s):  
Thin Films ◽  
Phase Formation ◽  
Dark Field ◽  
Nickel Layer ◽  
Multilayer Thin Films ◽  
Cross Sectional ◽  
Dark Field Imaging ◽  
Transmission Electron ◽  
Sputter Deposited ◽  
Constant Heating

The subject of reactive phase formation in multilayer thin films of varying periodicity has stimulated much research over the past few years. Recent studies have sought to understand the reactions that occur during the annealing of Ni/Al multilayers. Dark field imaging from transmission electron microscopy (TEM) studies in conjunction with in situ x-ray diffraction measurements, and calorimetry experiments (isothermal and constant heating rate), have yielded new insights into the sequence of phases that occur during annealing and the evolution of their microstructure.In this paper we report on reactive phase formation in sputter-deposited lNi:3Al multilayer thin films with a periodicity A (the combined thickness of an aluminum and nickel layer) from 2.5 to 320 nm. A cross-sectional TEM micrograph of an as-deposited film with a periodicity of 10 nm is shown in figure 1. This image shows diffraction contrast from the Ni grains and occasionally from the Al grains in their respective layers.

On the trustability of semi-empirical methods to the calculation of gas phase formation enthalpies of inorganic compounds containing heavy metals: tin borates

2017 ◽  
Author(s):  
Robson de Farias
Keyword(s):  
Heavy Metals ◽  
Gas Phase ◽  
Phase Formation ◽  
Inorganic Compounds ◽  
Formation Enthalpy ◽  
Computational Time ◽  
Gas Formation ◽  
Formation Enthalpies ◽  
Knudsen Effusion Mass Spectrometry ◽  
Semi Empirical

<p>In the present work, are calculated the gas formation enthalpies (SE; PM3 and PM6) for tin borates: SnB<sub>2</sub>O<sub>4</sub><sup> </sup>and Sn<sub>2</sub>B<sub>2</sub>O<sub>5</sub>. The calculated values are compared with experimental ones, obtained by Knudsen effusion mass spectrometry [3]. It is shown that SE methods, besides their lower computational time consuming can, indeed, provide reliable gas phase formation enthalpy values for inorganic compounds containing heavy metals.</p>

Severe plastic deformation of Al-1%Cu Alloy processed by a Simple Cyclic Extrusion Compression technique

2018 ◽  
Vol 1 (1) ◽  
pp. 77-90
Author(s):  
Walaa Abdelaziem ◽  
Atef Hamada ◽  
Mohsen A. Hassan
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Deformation Behavior ◽  
Cast Alloy ◽  
Surface Hardness ◽  
Grain Structure ◽  
Compression Technique ◽  
Cu Alloy ◽  
Cyclic Extrusion Compression

Severe plastic deformation is an effective method for improving the mechanical properties of metallic alloys through promoting the grain structure. In the present work, simple cyclic extrusion compression technique (SCEC) has been developed for producing a fine structure of cast Al-1 wt. % Cu alloy and consequently enhancing the mechanical properties of the studied alloy. It was found that the grain structure was significantly reduced from 1500 µm to 100 µm after two passes of cyclic extrusion. The ultimate tensile strength and elongation to failure of the as-cast alloy were 110 MPa and 12 %, respectively. However, the corresponding mechanical properties of the two pass CEC deformed alloy are 275 MPa and 35%, respectively. These findings ensure that a significant improvement in the grain structure has been achieved. Also, cyclic extrusion deformation increased the surface hardness of the alloy by 49 % after two passes. FE-simulation model was adopted to simulate the deformation behavior of the material during the cyclic extrusion process using DEFORMTM-3D Ver11.0. The FE-results revealed that SCEC technique was able to impose severe plastic strains with the number of passes. The model was able to predict the damage, punch load, back pressure, and deformation behavior.

Effect of isothermal quenching on microstructure and properties of a forged and unforged Fe-B cast alloy

2017 ◽  
Vol 59 (10) ◽  
pp. 876-880 ◽  
Author(s):  
Jianjun Zhang ◽  
Huimin Liao ◽  
Sude Ma
Keyword(s):  
Cast Alloy ◽  
Isothermal Quenching ◽  
Microstructure And Properties

Sigma phase formation and its effect on mechanical properties in the corrosion-resistant superalloy K44

2006 ◽  
Vol 97 (2) ◽  
pp. 174-181 ◽  
Author(s):  
J. S. Hou ◽  
J. T. Guo ◽  
L. Z. Zhou ◽  
H. Q. Ye
Keyword(s):  
Mechanical Properties ◽  
Phase Formation ◽  
Sigma Phase ◽  
Corrosion Resistant

The Microstructure and Properties of Sr-Modified Al-3Si-0.45Mg-0.45Cu-0.2Sc-0.2Zr Cast Alloy

2017 ◽  
Vol 54 (7) ◽  
pp. 448-468 ◽  
Author(s):  
Z. Sheng ◽  
X. Du ◽  
Y. Li ◽  
Y. Zhang ◽  
Z. Zhang ◽  
...  
Keyword(s):  
Cast Alloy ◽  
Microstructure And Properties

INCONEL 713C

Alloy Digest ◽  
1959 ◽  
Vol 8 (2) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Thermal Fatigue ◽  
Rupture Strength ◽  
Cast Alloy ◽  
International Nickel Company ◽  
Nickel Chromium ◽  
Temperature Performance ◽  
Inconel 713C

Abstract INCONEL 713C is a nickel-chromium cast alloy which possesses outstanding rupture strength at 1700 F. combined with excellent resistance to thermal fatigue and good castability. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance as well as machining and joining. Filing Code: Ni-50. Producer or source: International Nickel Company Inc..

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