In situ formed Al<sub>3</sub>Ti particles in Al alloy matrix and their effects on the microstructure and mechanical properties of 7075 alloy

Liu, Zhiwei; Rakita, Milan; Wang, Xiaoming; Xu, Wilson; Han, Qingyou

doi:10.1557/jmr.2014.123

Cited by 45 publications

(8 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The microstructures of as-cast AA7075 are dendritic structures, these dendritic structures are formed due to solidification [8]. The dendritic structure of cast AA7075 has been adjusted to grainy structures, this is because of the grain refining activity of TiB2 particles [12,13]. From the figure below, it can be seen that the amount of agglomeration in 10% wt and 15% wt reinforcement is insignificant.…”

Section: Microstructure Of Aa7075/tib2 Amcsmentioning

confidence: 99%

Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB₂ metal matrix composite

2021

View full text Add to dashboard Cite

In the present study, AA7075/TiB2 aluminium metal matrix composite (AMCs) was prepared by stir casting method using in-situ reactions of inorganic salts KBF4 and K2TiF6. In this process AA7075 alloy is reinforced with different weighted percentages of (5 %wt, 10 %wt, and 15 %wt) Titanium Diboride (TiB2) particles. X-ray Diffraction (XRD) investigation reveals the presence of TiB2 particles without any formation of the intermediate phase. An optical microscope was used to examine the microstructure, which revealed that the TiB2 particles are equally distributed and that grain size reduces as the weighted percentage of reinforcement particles increases. When the weighted percentage of TiB2 reinforcement particles increased, the microhardness and ultimate tensile strength of the AA7075/TiB2 AMCs increased. Furthermore, the ductile mode of failure of the tensile specimen has been observed by fractography analysis.

show abstract

Section: Microstructure Of Aa7075/tib2 Amcsmentioning

confidence: 99%

Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB₂ metal matrix composite

2021

View full text Add to dashboard Cite

show abstract

“…Generally, when δ < 5%, the interface between the substrate and the matrix is coherent; when 5% < δ < 25%, the interface between the substrate and the matrix is partially coherent. 14) However, since the Al 3 Ti phase has a tetragonal D0 22 structure, as shown in Fig. 1(b), the atomic arrangement does not have exact hexagonal symmetry for {112} Al3Ti planes, and square symmetry for (100) Al3Ti and (010) Al3Ti planes.…”

Section: Concept Of Novel Refinermentioning

confidence: 99%

Fabrication of novel Al–L1₂-type Al_2.7Fe_0.3Ti refiners by spark plasma sintering and their refining performance

Watanabe¹,

Hamada²,

Sato³

2015

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Grain refinement plays a vital role in cast and wrought aluminum alloys. The grain refiners introduce particles that heterogeneously nucleate the primary alpha-aluminum. It is well known that Al3Ti particles are commonly used as heterogeneous nucleants for aluminum alloy casting. If a substance with a smaller misfit for aluminum is used as a heterogeneous nucleant, such as L12 intermetallic compounds, it should be possible to achieve a better grain refining performance. In this study, the optimum condition for a grain refiner using Al2.7Fe0.3Ti intermetallic compound particles with the L12 structure was investigated.

show abstract

“…However, the distribution of the Al3Ti particles prepared by this method is uncontrollable and cannot be concentrated in a designated area, leading to low utilization of raw materials. Besides, the lack of external power increases the reaction rate during the in-situ endogenous process, resulting in prolonged reaction time, and the reinforcing phase is easy to grow and agglomerate [7].…”

Section: Introductionmentioning

confidence: 99%

Study on the Microstructure and Wear Behavior of In-Situ Al3Ti/Al Composites Under Induction Heating

Yan¹,

Niu²,

Zhang³

et al. 2022

View full text Add to dashboard Cite

In the study, Ti fiber (200 μm, 99.8 wt.%) and pure aluminum (99.6 wt.%) were respectively used as the reaction source and matrix to prepare Al-based composites by in-situ synthesis methods. During the stage of preparing the preform, Ti fibers were fixed in the matrix at equal intervals to pre-control the initial position of the product. The preform was heated in an induction heating device finally, at the same time, parameter combinations of different frequencies and currents were applied to promote the in-situ reaction between Al-Ti, thereby the Al matrix composites reinforced by Al3Ti were obtained. The phase composition, microstructure and wear resistance of the composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and wear testers. The results show that when the frequency and current are 5 kHz and 15 A respectively, the Ti fiber is completely reacted, and the product is the isometric Al3Ti with a size of 1 – 2 μm and a particle spacing of about 5 μm, reaching the optimal microstructure under all parameters. Under the condition of a load of 9.8 N, the wear rate of the composites at 5 kHz and 15 A is 2.325 mg/mm2, indicating the best values in this experiment.

show abstract

In situ formed Al₃Ti particles in Al alloy matrix and their effects on the microstructure and mechanical properties of 7075 alloy

Abstract: Abstract

Cited by 45 publications

References 21 publications

Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB₂ metal matrix composite

Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB₂ metal matrix composite

Fabrication of novel Al–L1₂-type Al_2.7Fe_0.3Ti refiners by spark plasma sintering and their refining performance

Study on the Microstructure and Wear Behavior of In-Situ Al3Ti/Al Composites Under Induction Heating

Contact Info

Product

Resources

About

In situ formed Al3Ti particles in Al alloy matrix and their effects on the microstructure and mechanical properties of 7075 alloy

Abstract: Abstract

Cited by 45 publications

References 21 publications

Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB2 metal matrix composite

Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB2 metal matrix composite

Fabrication of novel Al–L12-type Al2.7Fe0.3Ti refiners by spark plasma sintering and their refining performance

Study on the Microstructure and Wear Behavior of In-Situ Al3Ti/Al Composites Under Induction Heating

Contact Info

Product

Resources

About

In situ formed Al₃Ti particles in Al alloy matrix and their effects on the microstructure and mechanical properties of 7075 alloy

Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB₂ metal matrix composite

Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB₂ metal matrix composite

Fabrication of novel Al–L1₂-type Al_2.7Fe_0.3Ti refiners by spark plasma sintering and their refining performance