Microstructure and mechanical characterization of in situ synthesized AA6061/(TiB₂+Al₂O₃) hybrid aluminum matrix composites (2024)

David Raja Selvam, J., Dinaharan, I., Vibin Philip, S. (2018). Microstructure and mechanical characterization of in situ synthesized AA6061/(TiB2+Al2O3) hybrid aluminum matrix composites. Journal of Alloys and Compounds, 740, 529-535. https://doi.org/10.1016/j.jallcom.2018.01.016

David Raja Selvam, J. ; Dinaharan, I. ; Vibin Philip, S. et al. / Microstructure and mechanical characterization of in situ synthesized AA6061/(TiB2+Al2O3) hybrid aluminum matrix composites. In: Journal of Alloys and Compounds. 2018 ; Vol. 740. pp. 529-535.

@article{76e4e7af1a3d44308f77a3ed7846652b,

title = "Microstructure and mechanical characterization of in situ synthesized AA6061/(TiB2+Al2O3) hybrid aluminum matrix composites",

abstract = "TiB2 and Al2O3 particulates reinforced AA6061 aluminum matrix composites (AMCs) were synthesized by in-situ reaction of titanium (Ti) and boric acid (H3BO3) powders with molten aluminum. AMCs were fabricated using an electric stir casting furnace under a controlled environment. Heat flow curves of differential thermal analysis (DTA) showed that the synthesis temperature for the formation of TiB2 and Al2O3 using Al-Ti-H3BO3 reaction system was 950 °C. The in-situ synthesized composites were characterized using XRD, FESEM, TEM and EBSD. XRD results revealed the formation of TiB2 and Al2O3 particulates in the composite. FESEM micrographs revealed a hom*ogenous distribution of both the particulates with good interfacial bonding. EBSD maps showed that the in-situ formed TiB2 and Al2O3 particulates refined the grains of the aluminum matrix from 103 μm at 0 wt% to 14 μm at 15 wt%. Al2O3 particles exhibited spherical shape while TiB2 particles displayed hexagonal and cubic shapes. The formation of ultrafine and nano scale thermodynamically stable TiB2 and Al2O3 particles enhanced the microhardness and the tensile strength of the AMCs. The microhardness and the tensile strength were respectively 122 HV and 287 MPa at 15 wt%.",

keywords = "Aluminum matrix composites, Casting, Microstructure, Tensile strength",

author = "{David Raja Selvam}, J. and I. Dinaharan and {Vibin Philip}, S. and Mashinini, {P. M.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = apr,

day = "5",

doi = "10.1016/j.jallcom.2018.01.016",

language = "English",

volume = "740",

pages = "529--535",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

}

David Raja Selvam, J, Dinaharan, I, Vibin Philip, S 2018, 'Microstructure and mechanical characterization of in situ synthesized AA6061/(TiB2+Al2O3) hybrid aluminum matrix composites', Journal of Alloys and Compounds, vol. 740, pp. 529-535. https://doi.org/10.1016/j.jallcom.2018.01.016

Microstructure and mechanical characterization of in situ synthesized AA6061/(TiB2+Al2O3) hybrid aluminum matrix composites. / David Raja Selvam, J.; Dinaharan, I.; Vibin Philip, S. et al.
In: Journal of Alloys and Compounds, Vol. 740, 05.04.2018, p. 529-535.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Microstructure and mechanical characterization of in situ synthesized AA6061/(TiB2+Al2O3) hybrid aluminum matrix composites

AU - David Raja Selvam, J.

AU - Dinaharan, I.

AU - Vibin Philip, S.

AU - Mashinini, P. M.

N1 - Publisher Copyright:© 2018 Elsevier B.V.

PY - 2018/4/5

Y1 - 2018/4/5

N2 - TiB2 and Al2O3 particulates reinforced AA6061 aluminum matrix composites (AMCs) were synthesized by in-situ reaction of titanium (Ti) and boric acid (H3BO3) powders with molten aluminum. AMCs were fabricated using an electric stir casting furnace under a controlled environment. Heat flow curves of differential thermal analysis (DTA) showed that the synthesis temperature for the formation of TiB2 and Al2O3 using Al-Ti-H3BO3 reaction system was 950 °C. The in-situ synthesized composites were characterized using XRD, FESEM, TEM and EBSD. XRD results revealed the formation of TiB2 and Al2O3 particulates in the composite. FESEM micrographs revealed a hom*ogenous distribution of both the particulates with good interfacial bonding. EBSD maps showed that the in-situ formed TiB2 and Al2O3 particulates refined the grains of the aluminum matrix from 103 μm at 0 wt% to 14 μm at 15 wt%. Al2O3 particles exhibited spherical shape while TiB2 particles displayed hexagonal and cubic shapes. The formation of ultrafine and nano scale thermodynamically stable TiB2 and Al2O3 particles enhanced the microhardness and the tensile strength of the AMCs. The microhardness and the tensile strength were respectively 122 HV and 287 MPa at 15 wt%.

AB - TiB2 and Al2O3 particulates reinforced AA6061 aluminum matrix composites (AMCs) were synthesized by in-situ reaction of titanium (Ti) and boric acid (H3BO3) powders with molten aluminum. AMCs were fabricated using an electric stir casting furnace under a controlled environment. Heat flow curves of differential thermal analysis (DTA) showed that the synthesis temperature for the formation of TiB2 and Al2O3 using Al-Ti-H3BO3 reaction system was 950 °C. The in-situ synthesized composites were characterized using XRD, FESEM, TEM and EBSD. XRD results revealed the formation of TiB2 and Al2O3 particulates in the composite. FESEM micrographs revealed a hom*ogenous distribution of both the particulates with good interfacial bonding. EBSD maps showed that the in-situ formed TiB2 and Al2O3 particulates refined the grains of the aluminum matrix from 103 μm at 0 wt% to 14 μm at 15 wt%. Al2O3 particles exhibited spherical shape while TiB2 particles displayed hexagonal and cubic shapes. The formation of ultrafine and nano scale thermodynamically stable TiB2 and Al2O3 particles enhanced the microhardness and the tensile strength of the AMCs. The microhardness and the tensile strength were respectively 122 HV and 287 MPa at 15 wt%.

KW - Aluminum matrix composites

KW - Casting

KW - Microstructure

KW - Tensile strength

UR - http://www.scopus.com/inward/record.url?scp=85040042200&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2018.01.016

DO - 10.1016/j.jallcom.2018.01.016

M3 - Article

AN - SCOPUS:85040042200

SN - 0925-8388

VL - 740

SP - 529

EP - 535

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

David Raja Selvam J, Dinaharan I, Vibin Philip S, Mashinini PM. Microstructure and mechanical characterization of in situ synthesized AA6061/(TiB2+Al2O3) hybrid aluminum matrix composites. Journal of Alloys and Compounds. 2018 Apr 5;740:529-535. doi: 10.1016/j.jallcom.2018.01.016