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Effects Of Al Addition And Nitridation On Microstructures And Mechanical Properties Of Nbtivzr High Entropy Alloy Films
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Book Synopsis Effects of Al Addition and Nitridation on Microstructures and Mechanical Properties of NbTiVZr High Entropy Alloy Films by : 張洛齊
Download or read book Effects of Al Addition and Nitridation on Microstructures and Mechanical Properties of NbTiVZr High Entropy Alloy Films written by 張洛齊 and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Silicon and Neodymium Additions on Microstructures and Mechanical Properties of CoCrNi Medium Entropy Alloy Films by : 彭慧文
Download or read book Effects of Silicon and Neodymium Additions on Microstructures and Mechanical Properties of CoCrNi Medium Entropy Alloy Films written by 彭慧文 and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Nb Additions on the Microstructure and Mechanical Property of CoCrFeNi High-entropy Alloys by :
Download or read book Effects of Nb Additions on the Microstructure and Mechanical Property of CoCrFeNi High-entropy Alloys written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Alloy Composition and Thermo-Mechanical Processing Procedure on Microstructure and Mechanical Properties of High-Magnesium Alloys by : Ralph Brian Johnson
Download or read book The Influence of Alloy Composition and Thermo-Mechanical Processing Procedure on Microstructure and Mechanical Properties of High-Magnesium Alloys written by Ralph Brian Johnson and published by . This book was released on 1980 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research was the development of a thermomechanical procedure to process Aluminum-Magnesium alloys and testing effects of alloying additions on these alloys. Magnesium contents of eight and ten weight percent and the alloying effects of copper and manganese were studied. Microstructures and mechanical properties at six warm rolling temperatures located above and below the solvus line of these alloys were examined. Ultimate tensile strengths in excess of 680 MPa (99 KSI) were obtained. Microstructural evidence indicated that the precipitation of the 'beta' intermetallic phase was one of the most important mechanisms in controlling the strength of the alloy. Furthermore, precipitation is so rapid at higher temperatures that it becomes the strongest force within the microstructure and its presence prevents any possible recrystallization of the alloy. However, when the temperature exceeds the solvus temperature for the alloy, recrystallization does occur with large losses in both yield and ultimate tensile strength. (Author).
Book Synopsis Effect of Microstructure on the Mechanical Properties of Anodic Films on Al and an Al-zn-mg Alloy--part Ii by : U. BERTOCCI
Download or read book Effect of Microstructure on the Mechanical Properties of Anodic Films on Al and an Al-zn-mg Alloy--part Ii written by U. BERTOCCI and published by . This book was released on 1972 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimizing the Heat Treatment of High Strength Al-Si-Mg and Al-Cu-Mg-Zn by : Ibrahim Mohamed Fawzy
Download or read book Optimizing the Heat Treatment of High Strength Al-Si-Mg and Al-Cu-Mg-Zn written by Ibrahim Mohamed Fawzy and published by LAP Lambert Academic Publishing. This book was released on 2015-10-30 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of aeronautical alloys requires the use of these particular alloys for their strength and ductility. These properties can be further enhanced by controlling the added alloying elements as well as the heat treatment parameters. The objective of the present work was to determine the effect of the interactions between element additions and heat treatment on the alloy microstructure and mechanical properties. The present study was carried out to investigate both the formability and mechanical properties of 6xxx alloy series. The slabs (7 x 11 x 1.5 cm each) were machined and homogenized for 10 h at 520 C, followed by air cooling. The results show that a -iron phase displays low formability and hinders deformation of the grains during cold rolling and leads to premature cracking. The cold rolled structure contains elongated grains with broken -Al5FeSi platelet fragments. In the Mn-containing alloy, the -iron phase is more easily deformable while addition of Sr does not improve the alloy behavior. With beryllium additions, the iron intermetallics precipitate in the form of small, globular -Al8Fe2SiBe script particles, in the interdendritic regions."
Book Synopsis Effect of Aluminum Addition on Thermal Stability of High Entropy Alloys Using an In-Situ TEM Heating Approach by : Elaf A. Anber
Download or read book Effect of Aluminum Addition on Thermal Stability of High Entropy Alloys Using an In-Situ TEM Heating Approach written by Elaf A. Anber and published by . This book was released on 2020 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: High entropy alloys (HEAs) have received considerable attention due to their promising thermal, mechanical, and corrosion-resistant properties which make them widely suited for aerospace and marine applications. While the thermal stability of Al-containing HEAs has been studied at various annealing temperatures, the results have focused on the late stages of precipitation, highlighting the need for the analysis of the intermediate stage precipitation. In-situ heating in the transmission electron microscope (TEM) complemented by ex-situ characterization of bulk annealed specimens, thermodynamic calculations, and precipitation simulations were utilized to study the thermal evolution, by concentrating on the role of heterogenous nucleation sites, of AlxCoCrFeNi from nucleation to late stage precipitate growth, tracking the early, intermediate, and final stages of intermediate phases. In-situ TEM revealed the formation of additional intermediate phase, Co-B2 at 550°Cin Al0.3CoCrFeNi, where hundreds of hours are predicted for this phase to be shown during ex-situ experiments. At higher annealing temperatures between 700-900°C, in-situ TEM shows the formation of Cr-rich precipitates as the first intermediate phase, followed by NiAl precipitates forming coprecipitates. In conjunction with the in-situ and ex-situ TEM studies, thermodynamic calculations and precipitation simulations were performed to predict the formation of these phases and are found to support the experimental results. Additionally, the study showed , for the first time, that the quaternary alloy is unstable at an intermediate temperature, where Cr-BCC precipitates formed after a 10 min exposure at 750 °C during in-situ TEM heating. Moreover, the effect of Al addition (0.1-0.5 mole fraction) on the thermal stability of the base chemistry alloy was studied at a temperature between 700 to 900 °C where more complex coprecipitates that consist of NiAl-B2 and Cr-rich BCC were formed when Al content exceeded 7 at. %. Interestingly, the increase in Al content accelerates the formation of B2 (NiAl) phase and enhances the overall density of the secondary phases and the content of Cr in Cr-rich BCC precipitates. In addition to phase stability, the study aimed to understand the role of Al addition on the oxidation resistance of refractory HEAs, tracking the evolution of complex oxides in Alx (0.0-0.75)TiTaHfZr at 900 C for 10 hr. We successfully showed that addition of Al plays a vital role in formation of the passivation layer and prevention of pesting phenomena in TiTaHfZrNb. Employing precession diffraction technique, along with EDS, two Al-rich oxides form: Al-Ti-O (TiO2 structure) and [alpha]-Al2O3. Furthermore, addition of Al induced formation of more complex oxide scale, in comparison with TiTaHfZr, where only TiO2 and Nb2TiO7 structures were presented in the base RHEAs. The present work provides a new insight into the microstructural and oxidation evolution of HEAs and reveals the importance of intermediate stages of thermal evolution, enabling a more predictive view of phase evaluation in this class of alloys. Keywords: High Entropy Alloys, In-situ TEM, Intermediate phases, Oxidation, Phase stability
Book Synopsis The Effects of Two-Stage Aging on the Microstructure and Mechanical Properties of the New Al-Si-Cu-Mg Alloy by :
Download or read book The Effects of Two-Stage Aging on the Microstructure and Mechanical Properties of the New Al-Si-Cu-Mg Alloy written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Composition and Primary Processing on the Microstructure and Mechanical Properties of High-strength Aluminum Alloys by : T. H. Sanders
Download or read book Effects of Composition and Primary Processing on the Microstructure and Mechanical Properties of High-strength Aluminum Alloys written by T. H. Sanders and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Nitrogen on the Phase Transformations, Microstructures, and Mechanical Properties of Automotive Dual-phase Sheet Steel by : Tyson W. Brown
Download or read book The Effects of Nitrogen on the Phase Transformations, Microstructures, and Mechanical Properties of Automotive Dual-phase Sheet Steel written by Tyson W. Brown and published by . This book was released on 2011 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation Into the Influence of Thermomechanical Processing on Microstructure and Mechanical Properties of High-Strength Aluminum-Magnesium Alloys by : William Goodwin Speed
Download or read book An Investigation Into the Influence of Thermomechanical Processing on Microstructure and Mechanical Properties of High-Strength Aluminum-Magnesium Alloys written by William Goodwin Speed and published by . This book was released on 1979 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microstructures and mechanical properties resulting from thermomechanical processing of high-Magnesium (Mg) content Aluminum-Magnesium (Al-Mg) alloys were investigated in this research. Warm rolling processes, intended to refine both grain size and second phase Al3Mg2 (beta) particle size, were conducted for alloy compositions of 10.2 weight % Mg, 10.2 weight % Mg plus 0.5 weight % copper (Cu) and 12.1 weight % Mg. Solution treatment, hot upset forging, resolutioning and rapid cooling provided initial microstructural homogenization. Subsequent warm rolling was employed to refine the microstructure. The effect of warm rolling parameters of beta particle size and distribution was of particular concern. By warm rolling an alloy containing 10.2 % Mg plus 0.5 % Cu at 250 C, an ultimate tensile strength of 565 MPa (82000 psi), with 11.5 % elongation, was achieved with the added advantage of a strength to density ratio higher than present equivalent-strength alloys, such as 7075-T6.
Book Synopsis Microstructure and Electromigration Effects in AL and AL ALLOY Thin Films by : John E. Sanchez
Download or read book Microstructure and Electromigration Effects in AL and AL ALLOY Thin Films written by John E. Sanchez and published by . This book was released on 1991 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Phase Transformations, Microstructure and Mechanical Properties of Nb-Al Alloys by : Sen-Shan Yang
Download or read book A Study of Phase Transformations, Microstructure and Mechanical Properties of Nb-Al Alloys written by Sen-Shan Yang and published by . This book was released on 1992 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of additives on the microstructure and mechanical properties of aluminum-silicon alloys by : Adel Mohamed
Download or read book Effect of additives on the microstructure and mechanical properties of aluminum-silicon alloys written by Adel Mohamed and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Microstructure on the Properties of High Strength Aluminum Alloys by : E. A. Starke
Download or read book The Effects of Microstructure on the Properties of High Strength Aluminum Alloys written by E. A. Starke and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Microstructure on the Properties of High Strength Aluminum Alloys by : E. A. Starke
Download or read book The Effect of Microstructure on the Properties of High Strength Aluminum Alloys written by E. A. Starke and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of High-pressure Torsion Processing at Different Temperatures on the Microstructure and Mechanical Properties of an Al-Mg-Si Alloy by : Kaan Tuğcu
Download or read book The Effect of High-pressure Torsion Processing at Different Temperatures on the Microstructure and Mechanical Properties of an Al-Mg-Si Alloy written by Kaan Tuğcu and published by . This book was released on 2012 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
