Evolution of microstructure and mechanical properties of Al-5 wt% Ti composite fabricated by P/M and hot extrusion: Effect of heat treatment

Rezaei, Alireza; Hosseini, H.R. Madaah

doi:10.1016/j.msea.2017.02.049

Cited by 30 publications

(9 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been shown in previous studies that in aluminum-matrix composites, second phase particles can act as load-bearing components and improve mechanical properties [12,13]. The results of this study showed that the blocky and mixed samples containing 26 and 11 vol% intermetallic particles have higher yield strength values than those of pure aluminum.…”

Section: Discussionmentioning

confidence: 48%

Spatial and microstructural dependence of mechanical properties and wear performance of functionally graded Al–TiAl3 in situ composite

Yousefi

Doostmohammadi

2019

SN Appl. Sci.

View full text Add to dashboard Cite

Effect of morphology and spatial distribution of TiAl 3 particles on the hardness, the tensile behavior and the wear performance of functionally graded Al-TiAl 3 in situ composite (FGC) was investigated. Initially, FGC was produced by interaction between solid Ti and liquid Al. Based on the spatial distribution and morphology of TiAl 3 particles in the microstructure of FGC, three distinctive regions including blocky-particle region, mixed-particle region (blocky and short plate particles) and lengthy plate-particle region were studied. Results of this study showed that the blocky-particle region had promoted tensile strength as well as highly improved wear resistance. In addition, this region with higher density of blocky particles and low interparticle spacing showed a brittle fracture. The mixed-particle region with a lower density of blocky particles had a ductile fracture mechanism while the plate-particle region showed cleavage fracture. The dominant wear mechanism for regions including blocky particles was determined to be mild oxidation while it was delamination wear for regions containing plate particles. Finally, correlation between mechanical properties, wear resistance and microstructure of FGC was discussed.

show abstract

Section: Discussionmentioning

confidence: 48%

Spatial and microstructural dependence of mechanical properties and wear performance of functionally graded Al–TiAl3 in situ composite

Yousefi

Doostmohammadi

2019

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…Another way to overcome these adverse effects is to use metal reinforcements [8][9][10]. Metal reinforcements, such as metallic glasses [11,12], quasi-crystalline [13], alloy [14,15], intermetallics [16] and pure metal [17] so on, are considered by researchers to negate the adverse effects associating with ceramics. Available scientific literatures have been revealed that plasticity metallic reinforcements could improve the strength and plasticity of composites [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Interface Structure and Mechanical Properties of 7075Al Hybrid Composite Reinforced with Micron Ti Metal Particles Using Pressure Infiltration

Liu

Zheng

Cao

et al. 2019

Metals

View full text Add to dashboard Cite

Micron Ti metal particles were incorporated into SiCp/7075Al composites using pressure infiltration. The interface structure between the Ti metal particles and the matrix during the casting processes were investigated. Results show that the dispersed unreacted Ti particles form mutual diffusion layer at the interface without the formation of low-temperature intermetallic phases during the solidification processes. The interaction between the micron Ti and the molten aluminum alloy is subject to the mutual diffusion coefficient of Ti–Al rather than the reaction activation energy. The tensile strength and plasticity of the composite were improved simultaneously due to the high interfacial bonding strength and released thermal misfit stress cause by the incorporated Ti metal particles.

show abstract

“…Powder metallurgy allows producing of the parts from new materials, for example, as pseudoalloys from non-fusible-cast components, with controlled mechanical, magnetic, and others characteristics that cannot be achieved by any other production method [23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

A Cold-Pressing Method Combining Axial and Shear Flow of Powder Compaction to Produce High-Density Iron Parts

et al. 2019

View full text Add to dashboard Cite

Highly performance methods for cold pressing (cold die forging) of preforms from iron powder with subsequent heat treatment and producing ready parts made of powder are described in the paper. These methods allow fabricating parts with smooth surfaces and improved mechanical characteristics—porosity, tensile strength. Application of the traditional design set-up with a single-axial loading is restricted to high stresses in the dies to deform the preforms that lead to cracks formation. New powder compaction schemes by applying active friction forces (shear-enhanced compaction) make it possible to unload dies and produce high-quality parts by cold pressing. The scheme allows moving the die in the direction of the material flow with a velocity that exceeds the material flow velocity.

show abstract

Evolution of microstructure and mechanical properties of Al-5 wt% Ti composite fabricated by P/M and hot extrusion: Effect of heat treatment

Cited by 30 publications

References 37 publications

Spatial and microstructural dependence of mechanical properties and wear performance of functionally graded Al–TiAl3 in situ composite

Spatial and microstructural dependence of mechanical properties and wear performance of functionally graded Al–TiAl3 in situ composite

Interface Structure and Mechanical Properties of 7075Al Hybrid Composite Reinforced with Micron Ti Metal Particles Using Pressure Infiltration

A Cold-Pressing Method Combining Axial and Shear Flow of Powder Compaction to Produce High-Density Iron Parts

Contact Info

Product

Resources

About