Wear behaviour of near eutectic Al–Si alloy reinforced with in-situ TiB2 particles

Mandal, Arka; Murty, B.S.; Chakraborty, M.

doi:10.1016/j.msea.2008.11.007

Cited by 60 publications

(16 citation statements)

References 19 publications

(27 reference statements)

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“…However, as Ti is added into the A356 matrix it reacts and forms a TiAl 3 phase, it is clear that the grain growth of newly-formed grains in the structure is not excessive. This is because of the fact that certain phases added into the Al matrix, such as TiAl 3 , TiB 2 , TiC, and B, inhibit the grain growth [17,34]. X-ray diffraction results of A356-Ti alloy having different ratios of Ti are given in Figure 3.…”

Section: Resultsmentioning

confidence: 99%

“…Another important method used to improve the mechanical properties of the alloy is to compose stable in situ intermetallic phases in the structure [6][7][8]. In the production of aluminum metal matrix composites (AMMC), which are defined as materials having superior tribological properties, the most common materials used as reinforcement phase are SiC [9][10][11][12][13][14], Al 2 O 3 [15,16], TiB 2 [17,18] and TiC [19]. In the production of many AMMC materials, ex situ techniques are preferred (supplements made to the matrix ex situ in order to increase strength).…”

Section: Introductionmentioning

confidence: 99%

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Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Çam

Demir

Özyürek

2016

Metals

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Abstract:In this study, the effects of in situ TiAl 3 particles on dry sliding wear behavior of A356 aluminum alloy (added Ti) composites were investigated. The wear samples were prepared by adding different amounts of Ti (4%, 6%, and 8%) into A356 powder alloy by mechanical alloying. The mechanically alloyed powders were cold pressed at 600 MPa and sintered 530˝C for 1 h in argon atmosphere and cooled in the furnace. After the sintering process, the samples were characterized. The results show that AlTi and TiAl 3 intermetallic phases were formed and their amount increased depending on the amount of Ti added into A356 powder alloy. Out of the samples sintered with different titanium amounts (1 h at 530˝C), the highest hardness value and, accordingly, the lowest wear amount, were observed in the alloy containing 8% Ti.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Çam

Demir

Özyürek

2016

Metals

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“…Al-Si based alloys have been widely used for the automobile parts such as connecting rods and engine blocks to reduce the weight of automobile 13) and their microstructure has also been researched. 4,5) The reinforcing design for the Al alloys to increase the elastic modulus is required due to the lower mechanical properties compared with the steel in order to replace steel with the Al alloys since the NVH properties are strongly affected by the elastic modulus of material.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, researches for the TiB 2 particles are intensively investigated due to the superior mechanical properties for reinforcing the Al alloy. 911) Yi et al 12) and Mandal et al 13) explained that TiB 2 particle is effective for enhancement of the elastic modulus and wear resistance, respectively. Emamy et al 14) and Li et al 15) explained the formation behavior of TiB 2 through the boron diffusion into the TiAl 3 interface.…”

Section: Introductionmentioning

confidence: 99%

Effects of Titanium and Boron Additions with Mechanical Stirring on Mechanical Properties in Al-Si Alloys

Kim

Lee

et al. 2015

Mater. Trans.

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Al-Si based alloys are widely used to automobile parts for weight reduction. The mechanical stirring method was performed to achieve the homogeneously dispersed strengthening phases such as AlB 2 , Al 3 Ti and TiB 2 phases since the specific gravity of strengthening phases is different from the Al matrix. 500 rpm of mechanical stirring results in well dispersion of strengthening phases compared with lower speed (100 rpm) and higher speed (1,000) stirring rate. The higher elastic modulus, hardness and good wear resistance is obtained in the Al-12 mass%Si-2.3 mass%Ti-1 mass%B alloy due to the formation of strengthening phases such as Al 3 Ti and boride containing (AlTi)B 2 compared with Al-12 mass%Si, Al-12 mass%Si-2.3 mass%Ti and Al-12 mass%Si-1 mass%B alloy. Relationship between the microstructure and mechanical properties is discussed based on the solidification phenomena.

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“…Past research has shown that light alloys with transition in concentration of Si, SiC, Al 2 O 3 particles have been produced effectively by casting techniques [6,7]. Tomid et al [5] fabricated primary particle reinforced surface FGM composites using laser surfacing method.…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Functionally Gradient Al–Si Alloy Using Cast-Decant-Cast Process

Anandavel

Nazirudeen

Anburaj

et al. 2015

Trans Indian Inst Met

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A cylindrical component of functionally gradient Al alloy with high silicon in the outer and low silicon in the core was produced using cast-decant-cast (CDC) process. The preparation of the component consisted of pouring high Si-Al alloy first into a cylindrical mould, decantation of un-solidified liquid after the alloy solidified for a desired thickness against the mould walls and subsequently pouring the low Si-Al alloy at superheated temperature, so that the first alloy got partially re-melted forming a functionally gradient material (FGM) region between the two. The characteristics of FGM region like depth, size, shape and distribution of Si particles in the cross section of CDC alloy were evaluated by optical microscopy. Hardness tests and sliding pin-on-disc wear tests were carried out to compare hardness and wear resistance of outer, FGM and core regions. The micrographs of wear surfaces showed that the FGM region has better wear resistance as compared to outer and core regions as seen from the decreased delamination of wear tracks.

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Wear behaviour of near eutectic Al–Si alloy reinforced with in-situ TiB2 particles

Cited by 60 publications

References 19 publications

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Effects of Titanium and Boron Additions with Mechanical Stirring on Mechanical Properties in Al-Si Alloys

Development and Characterization of Functionally Gradient Al–Si Alloy Using Cast-Decant-Cast Process

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