Mechanical properties of some PM aluminide and silicide reinforced 2124 aluminium matrix composites

Torres, B.; Lieblich, Marcela; Ibáñez, Joaquı́n; Garcı́a-Escorial, A.

doi:10.1016/s1359-6462(02)00095-7

Cited by 93 publications

(57 citation statements)

References 14 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the literature [12], aluminium matrix composites reinforced with intermetallics present in general lower properties after T4 or T6 treatment than in T1.…”

Section: Discussionmentioning

confidence: 96%

“…On the contrary, during solid solution treatment of intermetallic reinforced composites, diffusion reaction products are more easily formed between intermetallic particles and the Al alloy matrix. In the case of Ni-aluminide reinforcements, the Al 3 Ni that nucleates and grows around the particles is brittle and the interphase with the matrix becomes very weak [3,5,12]. In the 2124/MoSi 2 composite studied here, yield stress, ultimate tensile strength and elongation to failure are clearly higher in T4 than in T1, Table 2 which is typical of 2xxx alloys with high silicon content [20].…”

Section: Discussionmentioning

confidence: 99%

“…This material presented a sound matrix/reinforcement bonding and good wear properties compared to unreinforced Al [6,11], and was thermally stable up to 300°C. For higher treatment temperatures, deleterious diffusion reaction products appeared [7,12], that hindered the use of age hardening Al alloy matrices such as those of the 2xxx and 6xxx Al series. When this type of Al alloys are required, a different intermetallic reinforcement should be found, that withstand solid solution treatments without catastrophically reacting with Al or any other solute element of the matrix.…”

Section: Introductionmentioning

confidence: 99%

“…In a previous work [12], a PM 2124 aluminium alloy matrix was reinforced with four different intermetallic powder particles: two nickel aluminides, Ni 3 Al and NiAl, and two silicides, Cr 3 Si and MoSi 2 , and their tensile properties were studied in tempering conditions T1 and T4, the latter consisting of a solid solution treatment at 495ºC for 30 minutes followed by water quenching and 48 hours of natural ageing. The best mechanical response was obtained with the 2124/MoSi 2 composite, that was also the only one that did not present reactivity between matrix and reinforcement during consolidation or during thermal treatment at 495ºC for 30 minutes.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Room and high temperature tensile behaviour of a P/M 2124/MoSi2 composite at different heat treatment conditions

Torres

Lieblich

2006

J Mater Sci

Self Cite

View full text Add to dashboard Cite

In the present work, a 2124/15vol%MoSi 2 composite was obtained by powder metallurgy. Its microstructure and mechanical properties were investigated at room and at high temperature (up to 200ºC) in conditions T351, T4 and after heat treatments at 495ºC for up to 100 hours. Up to 150ºC, tensile properties of 2124/MoSi 2 in T351 resulted similar to those of a ceramic reinforced 2124/SiC composite. Yield stress of the 2124/MoSi 2 material, after heating at 495ºC for up to 100 hours, resulted higher than that of the monolith 2124 alloy heated for the same periods. No diffusion reaction phases were formed surrounding the MoSi 2 reinforcing particles during such long exposures to high temperature. Only at 100 hours, large plate-like precipitates that contain Al, Cu, Mg and Si appeared. The high thermal stability of this 2124/MoSi 2 composite and its good mechanical properties at room and at elevated temperature makes MoSi 2 intermetallic a competitor of ceramic reinforcements.

show abstract

“…According to the literature [12], aluminium matrix composites reinforced with intermetallics present in general lower properties after T4 or T6 treatment than in T1.…”

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Room and high temperature tensile behaviour of a P/M 2124/MoSi2 composite at different heat treatment conditions

Torres

Lieblich

2006

J Mater Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…The compression strength of samples was measured according to the ASTM E9 standard. The loading rate was 0.5 mm/min in all experiments [4].…”

Section: Methodsmentioning

confidence: 99%

The Characteristics of Alumina Particle Reinforced Pure Al Matrix Composite

Parvin

Rahimian

2012

Acta Phys. Pol. A

View full text Add to dashboard Cite

Al 2 O 3 is widely used as the reinforcing additive in the metal matrix composites. The influence of Al 2 O 3 particle size on the density, hardness, microstructure, yield stress, compression strength, and elongation of the sintered Al-Al 2 O 3 composites were investigated. In the present study, 10 wt% of Al 2 O 3 powder with three different particle sizes (3, 12 and 48 µm) were used in the production of the samples. Powder metallurgy technique was utilized to obtain more homogeneous Al 2 O 3 distribution across the composites. The samples were cold pressed at 440 MPa, and sintered at 550 • C for 45 min. Results showed that the relative density of the composite was initially increased with decreasing particle size. However, it was decreased with further particle size reduction. It was also pointed out that the mechanical properties of the specimens were increased with decreasing particle size. The grain size and particle distribution homogeneity was decreased with raising the particle size.

show abstract