Influences of additional alloying elements (V, Ni, Cu, Sn, B) on structure and mechanical properties of high-strength hypereutectic Ti–Fe–Co bulk alloys

2006 ◽  
Vol 14 (3) ◽  
pp. 255-259 ◽  
Author(s):  
Larissa V. Louzguina-Luzgina ◽  
Dmitri V. Louzguine-Luzgin ◽  
Akihisa Inoue
Keyword(s):  
Mechanical Properties ◽  
High Strength ◽  
Alloying Elements ◽  
Bulk Alloys

Development Of High-Strength Aluminum-Based Alloys By Synthesis Of New Multicomponent Quasicrystals

1998 ◽  
Vol 553 ◽  
Author(s):  
A. Inoue ◽  
H. M. Kimura
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Rapid Solidification ◽  
Future Development ◽  
High Strength ◽  
Supercooled Liquid ◽  
Engineering Properties ◽  
Atomic Configuration ◽  
Lanthanide Metal ◽  
Bulk Alloys

AbstractBy the control of composition, clustered atomic configuration and stability of the supercooled liquid in the rapid solidification and powder metallurgy processes, high-strength Al-based bulk alloys containing nanoscale nonperiodic phases were produced in AI-Ln-LTM, AI-ETM-LTM and Al-(V, Cr, Mn)-LTM (Ln=lanthanide metal, LTM=VII and VIII group metals, ETM=IV to VI group metals) alloys containing high Al contents of 92 to 95 at%. The nonperiodic phases are composed of amorphous or icosahedral (I) phase. In particular, the Al-based bulk alloys consisting of nanoscale I particles surrounded by Al phase exhibit much better mechanical properties as compared with commercial Al base alloys. The success of producing the Al-based alloys with good engineering properties by use of I phase is important for future development of I-based alloys as practical materials.

scholarly journals Effect of Aluminum, Iron and Chromium Alloying on the Structure and Mechanical Properties of (Ti-Ni)-(Cu-Zr) Crystalline/Amorphous Composite Materials

Metals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 874
Author(s):  
Andrey A. Tsarkov ◽  
Vladislav Yu. Zadorozhnyy ◽  
Alexey N. Solonin ◽  
Dmitri V. Louzguine-Luzgin
Keyword(s):  
Mechanical Properties ◽  
Testing Machine ◽  
High Strength ◽  
Alloying Elements ◽  
Solid Matrix ◽  
Complete Suppression ◽  
Structural Investigations ◽  
X Ray ◽  
Composites Materials ◽  
The Matrix

High-strength crystalline/amorphous composites materials based on (Ti-Ni)-(Cu-Zr) system were developed. The optimal concentrations of additional alloying elements Al, Fe, and Cr were obtained. Structural investigations were carried out using X-ray diffraction equipment (XRD) and scanning electron microscope (SEM) with an energy-dispersive X-ray module (EDX). It was found that additives of aluminum and chromium up to 5 at% dissolve well into the solid matrix solution of the NiTi phase. At a concentration of 5 at%, the precipitation of the unfavorable NiTi2 phase occurs, which, as a result, leads to a dramatic decrease in ductility. Iron dissolves very well in the solid solution of the matrix phase due to chemical affinity with nickel. The addition of iron does not cause the precipitation of the NiTi2 phase in the concentration range of 0–8 at%, but with an increase in concentration, this leads to a decrease in the mechanical properties of the alloy. The mechanical behavior of alloys was studied in compression test conditions on a universal testing machine. The developed alloys have a good combination of strength and ductility due to their dual-phase structure. It was shown that additional alloying elements lead to a complete suppression of the martensitic transformation in the alloys.

Influence of alloying elements on the mechanical properties of high-strength weld metal

2017 ◽  
Vol 22 (6) ◽  
pp. 536-543 ◽  
Author(s):  
Ronald Schnitzer ◽  
Dominik Zügner ◽  
Phillip Haslberger ◽  
Wolfgang Ernst ◽  
Ernst Kozeschnik
Keyword(s):  
Mechanical Properties ◽  
Weld Metal ◽  
High Strength ◽  
Alloying Elements

Effect of Alloying Elements on the Strength and Casting Characteristics of High Strength Al-Zn-Mg-Cu Alloys

2005 ◽  
Vol 475-479 ◽  
pp. 2539-2542 ◽  
Author(s):  
Ki Tae Kim ◽  
Jeong Min Kim ◽  
Ki Dug Sung ◽  
Joong Hwan Jun ◽  
Woon Jae Jung
Keyword(s):  
Mechanical Properties ◽  
Base Alloy ◽  
High Strength ◽  
Hot Tearing ◽  
Alloying Elements ◽  
Cu Alloy ◽  
Cu Alloys ◽  
Zr Addition ◽  
Tearing Resistance ◽  
Mgzn2 Phase

Small amounts of various alloying elements were added to a high strength Al-Zn-Mg-Cu alloy and their effects on the microstructure, mechanical properties, and casting characteristics were investigated. Silicon additions with or without extra Mg to the Al-Zn-Mg-Cu alloy could enhance the castability such as fluidity, feedability, and hot tearing resistance significantly while maintaining a high strength. However, in these alloys containing silicon the compositional adjustment was necessary to prevent the Mg2Si phase formation from degrading the precipitation of MgZn2 phase that is responsible for the high strength. Zr addition to the base alloy was also observed to improve the feedability without deteriorating the tensile strength.

Effect of Alloying Elements on the Structure Peculiarities and Mechanical Properties of High-Strength Magnetic Fe-Cr-Co Based Alloys

2010 ◽  
Vol 168-169 ◽  
pp. 388-391
Author(s):  
V.V. Serikov ◽  
N.M. Kleinerman ◽  
A.V. Vershinin ◽  
E.V. Beloserov ◽  
N.V. Mushnikov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Separation ◽  
Yield Strength ◽  
Relative Elongation ◽  
High Strength ◽  
Alloying Elements ◽  
Effect Of Alloying

Structure and mechanical properties of high-strength alloys on the basis of the Fe-Cr-Co system with W, Ga, Cu and Al additives have been investigated by the Mossbauer technique. It is shown that the magnitude of yield strength is independent of the dopants, whereas the relative elongation is controlled by the process of phase separation in the alloys which is dependent on additions.

Development of New Wrought Mg Alloys: Improving the Corrosion Resistance by Addition of Alloying Elements

2020 ◽  
Vol 27 ◽  
pp. 50-60
Author(s):  
Guy Ben Hamu ◽  
Polina Metalnikov
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Oxide Layer ◽  
Weight Ratio ◽  
High Strength ◽  
Mg Alloys ◽  
Alloying Elements ◽  
Second Phase ◽  
Second Phase Particles ◽  
Superior Corrosion Resistance

Magnesium (Mg) alloys constitute an attractive structural material for transportation industries, due to their low density and high strength/weight ratio. However, high susceptibility to corrosion of Mg alloys limits their use. Therefore, there is a growing interest for development of new Mg alloys with good mechanical properties and superior corrosion resistance. Production of wrought Mg alloys results in enhancement of mechanical properties, whereas addition of alloying elements may result in improved corrosion behavior. In this study we distinguish the role of aluminum, zinc, tin and calcium additions on the corrosion performance of new wrought Mg alloys. Overall, addition of alloying elements resulted in precipitation of second phase particles with cathodic behavior (relatively to Mg matrix). This enhanced the micro-galvanic effects and the corrosion resistance in short periods of immersion was deteriorated. However, in longer periods of immersion the passive characteristics of the oxide layer played a significant role in improving the alloys' corrosion resistance. The contribution of each element to the oxide layer will be discussed in detail. In general, the quantities of alloying element should be sufficient to stabilize the corrosion products layer; yet as low as possible, in order to reduce the micro-galvanic effects.

Investigation of the structure and properties of hypereutectic Ti-based bulk alloys

2004 ◽  
Vol 842 ◽  
Author(s):  
Dmitri V. Louzguine-Luzgin ◽  
Larissa V. Louzguina-Luzgina ◽  
Akihisa Inoue
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Intermetallic Compound ◽  
Deformation Behaviour ◽  
High Strength ◽  
Solid Solution Phase ◽  
Mn Additions ◽  
Bulk Alloys ◽  
Compound Tife ◽  
Intermetallic Compound Tife

ABSTRACTStructure and mechanical properties of binary Ti-TM (TM-other transition metals) and ternary Ti-Fe-(TM, B or Si) alloys produced in the shape of the arc-melted ingots of about 25 mm diameter and 10 mm height are studied. The formation of high-strength and ductile hypereutectic alloys was achieved in the Ti-Fe, Ti-Fe-Cu and Ti-Fe-B systems. The structures of the high-strength and ductile hypereutectic alloys studied by X-ray diffractometry and scanning electron microscopy were found to consist of the primary cubic Pm3 m intermetallic compound (TiFe-phase or a solid solution on its base) and a dispersed eutectic consisting of this Pm3m intermetallic compound + BCC Im 3 m β-Ti supersaturated solid solution phase. The hypereutectic Ti-Fe alloy showed excellent compressive mechanical properties. The addition of Cu improves its ductility. B addition increased mechanical strength. Ni, Cr and Mn additions caused embrittlement owing to the formation of alternative intermetallic compounds. The deformation behaviour and the fractography of the Ti-based alloys were studied in details. The reasons for the high strength and good ductility of the hypereutectic alloys are discussed.

MECHANICAL PROPERTIES OF HIGH STRENGTH Al-Mg ALLOY SHEET

2009 ◽  
Vol 23 (06n07) ◽  
pp. 843-848 ◽  
Author(s):  
BONG-JAE CHOI ◽  
KYUNG-EUI HONG ◽  
YOUNG-JIG KIM
Keyword(s):  
Mechanical Properties ◽  
High Strength ◽  
Alloy Sheet ◽  
Mg Alloys ◽  
Alloying Elements ◽  
Mg Alloy ◽  
Al Alloy ◽  
Calphad Approach ◽  
Automotive Body ◽  
Al Mg Alloys

The aim of this research is to develop the high strength Al alloy sheet for the automotive body. For the fabrication Al - Mg alloy sheet, the composition of alloying elements was designed by the properties database and CALPHAD (Calculation Phase Diagram) approach which can predict the phases during solidification using thermodynamic database. Al - Mg alloys were designed using CALPHAD approach according to the high content of Mg with minor alloying elements. After phase predictions by CALPHAD, designed Al - Mg alloys were manufactured. Addition of Mg in Al melts were protected by dry air/Sulphur hexafluoride (SF6) mixture gas which can control the severe Mg ignition and oxidation. After rolling procedure of manufactured Al - Mg alloys, mechanical properties were examined with the variation of the heat treatment conditions.

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