Microstructure and mechanical properties of ternary intermetallic compound dispersed P/M Al-Mn-X-Zr (x=Cu,Ni) alloys

2009 ◽  
Vol 62 (2) ◽  
pp. 163-167 ◽  
Author(s):  
Hiroki Adachi ◽  
Wataru Itaka ◽  
Tetsuo Aida ◽  
K. Osamura ◽  
Manabu Imaoka ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Intermetallic Compound ◽  
Ni Alloys ◽  
Microstructure And Mechanical Properties ◽  
Ternary Intermetallic Compound

scholarly journals Effects of Boron Addition on the Microstructure and Mechanical Properties of (Ti,Ta)(C,N)-Co Based Cermets

Metals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 787
Author(s):  
Ernesto Chicardi ◽  
Francisco José Gotor Martínez
Keyword(s):  
Mechanical Properties ◽  
Liquid Phase ◽  
Intermetallic Compound ◽  
Solid Solutions ◽  
General Trend ◽  
Liquid Phase Sintering ◽  
Binder Phase ◽  
Boron Addition ◽  
Sintering Additive ◽  
Microstructure And Mechanical Properties

In this work, a titanium–tantalum carbonitride based cermet, with cobalt as the binder phase and boron as a sintering additive, was developed by a mechanically induced self-sustaining reaction process using two different methodologies. The boron additive was added to prevent the formation of brittle intermetallic compounds generally formed during the liquid phase sintering step due to the excessive ceramic dissolution into the molten binder phase. A systematic study was carried out to understand the effects of boron addition on the nature of the phases, microstructure, and mechanical properties of cermets. With the boron addition, the formation of two different boride solid solutions, i.e., (Ti,Ta)B2 and (Ti,Ta)3B4, was observed. Moreover, the nature of the binder was also modified, from the (Ti,Ta)Co2 brittle intermetallic compound (for cermets without boron addition) to ductile and tough (Ti,Ta)Co3 and α-Co phases (for cermets with boron addition). These modifications caused, as a general trend, the increase of hardness and toughness in cermets.

Effect of Sn and Al additions on the microstructure and mechanical properties of amorphous Ti–Cu–Zr–Ni alloys

2020 ◽  
Vol 29 (6) ◽  
pp. 066401
Author(s):  
Fu-Chuan Chen ◽  
Fu-Ping Dai ◽  
Xiao-Yi Yang ◽  
Ying Ruan ◽  
Bing-Bo Wei
Keyword(s):  
Mechanical Properties ◽  
Ni Alloys ◽  
Microstructure And Mechanical Properties ◽  
Al Additions

Effect of Nickel Addition on Microstructure and Mechanical Properties of Aluminum-Based Alloys

2011 ◽  
Vol 691 ◽  
pp. 10-14 ◽  
Author(s):  
F. Hernández-Méndez ◽  
A. Altamirano-Torres ◽  
José G. Miranda-Hernández ◽  
Eduardo Térres-Rojas ◽  
Enrique Rocha-Rangel
Keyword(s):  
Mechanical Properties ◽  
Intermetallic Compound ◽  
Comparative Study ◽  
Nickel Alloys ◽  
Nickel Content ◽  
Homogeneous Distribution ◽  
Microstructure And Mechanical Properties ◽  
Nickel Addition

In this work a comparative study between microstructure and mechanical properties of aluminum-nickel alloys with different contents of nickel was carried out. Alloys were produced by powders metallurgy. Characterization results indicates that the microstructure of the aluminum-nickel alloys present a thin and homogeneous distribution of an intermetallic compound in the aluminum’s matrix, identified as Al3Ni. Furthermore, it was find out that the amount of intermetallic Al3Ni increase as the nickel content in the alloy rises. Regarding the mechanical properties evaluated; it was establishes that the hardness, compression and flexion resistances also were improved due to the presence of the intermetallic compound.

Effect of Sr and Nd on Microstructure and Mechanical Properties of AZ91-1Si Alloy

2009 ◽  
Vol 610-613 ◽  
pp. 765-770 ◽  
Author(s):  
Zhi Wen Zou ◽  
Shou Mei Xiong
Keyword(s):  
Mechanical Properties ◽  
Trace Elements ◽  
Intermetallic Compound ◽  
Grain Refinement ◽  
Room Temperature ◽  
Chinese Script ◽  
Mg2si Phase ◽  
Microstructure And Mechanical Properties ◽  
Refinement Mechanism ◽  
Morphology Modification

In present work, trace elements Sr and Nd were added into AZ91-1wt%Si alloys. The alloys were cast into a permanent mould and then machined into test bars. The microstructure and mechanical properties at room temperature of the specimens were investigated. Results showed that complicated Chinese script Mg2Si phase decreased in size with the increase of Sr addition. When Sr addition increased to 0.1wt%, the Mg2Si phase was changed from Chinese script shape into uniform polygon shape completely. At the same time, mechanical properties improved due to the morphology modification of the Mg2Si phase. An intermetallic compound containing Mg, Al, Nd and Si was found when Nd was added to the alloy. Remarkable modification on the shape and distribution of the Mg2Si phase was observed because of the intermetallic compound, which leads to a great change in mechanical properties. The grain refinement mechanism of Sr and Nd elements on the Mg2Si phase was discussed.

Microstructure and Mechanical Properties of Mg-Al-Ca Alloys with Yttrium Addition

2007 ◽  
Vol 345-346 ◽  
pp. 73-76 ◽  
Author(s):  
Young Kyun Kim ◽  
Hyeon Taek Son ◽  
Jae Seol Lee ◽  
Ik Hyun Oh ◽  
H.J. Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Intermetallic Compound ◽  
Yield Strength ◽  
Grain Boundary ◽  
Intermetallic Phase ◽  
Solution Treated ◽  
Microstructure And Mechanical Properties ◽  
Yttrium Addition ◽  
Hardness Values ◽  
Cast Microstructure

The aims of this study are to investigate the effect of Y (yttrium) addition in the Mg-Al- Ca alloys on microstructure and mechanical properties. In additions, the alloys were solution treated in order to achieve a better understanding of the precipitation mechanisms. The as-cast microstructure of Mg-5Al-3Ca alloy and Mg-5Al-3Ca-xY alloys contains dendritic α-Mg matrix and eutectic intermetallic compound at grain boundary. The hardness values of Mg-Al-Ca alloy with Y additions were slightly increased than that of Mg-Al-Ca with no Y addition. It is because of reduction of α-Mg phase and presence of (Mg,Al)2Ca and Al-Y rich intermetallic phase at grain boundary and α-Mg matrix grains. Also, hardness value of yttrium (Y) containing alloys was increased with increasing Y contents. Compared to Mg-5Al-3Ca alloy, maximum strength and yield strength of the alloys with Y additions have slightly increased with increasing Y additions in the case of as-cast samples.

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ALUMINA POWDER COATINGS BY A NEW MULTI-CHAMBER DETONATION SPRAYER

2016 ◽  
Vol 23 (01) ◽  
pp. 1550088 ◽  
Author(s):  
M. S. PROZOROVA ◽  
M. G. KOVALEVA ◽  
M. YU. ARSEENKO ◽  
M. N. YAPRYNTSEV ◽  
YU. N. TYURIN ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Intermetallic Compound ◽  
Ceramic Coatings ◽  
Alumina Powder ◽  
Powder Coatings ◽  
Microstructure And Mechanical Properties ◽  
Dense Ceramic

The dense ceramic coatings based on alumina with hardness of 1100[Formula: see text][Formula: see text][Formula: see text]25 HV[Formula: see text] and porosity of less than 1% have been prepared by multi-chamber detonation sprayer (MCDS) with a barrel length of 500[Formula: see text]mm. The intermetallic compound of type FeAl was revealed in the area of the coating that adjoins the substrate.

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