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      Influence of in-situ Al 2O 3 content on mechanical properties of Al 2O 3 reinforced Fe–Cr–Ni alloys

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          Abstract

          In-situ Al 2O 3 (14.8–31.3 wt.%) reinforced Fe–Cr–Ni alloys were prepared using reactive hot pressing at a temperature of 700°C and pressure of 30 MPa for 2 h. X-ray diffraction showed that the obtained metal matrix composites (MMCs) mainly comprised Al 2O 3, Fe–Cr and Cr 0.7Fe 0.36Ni 2.9 phases. Vickers hardness values of the composites with varying Al 2O 3 contents were all around 4.28 GPa. Scanning electron microscopy images showed that the Al 2O 3 particles in the MMCs (with Al 2O 3 content of 14.8 wt.%) were ultrafine and uniformly distributed. Moreover, the metal matrix composite with 14.8 wt.% Al 2O 3 exhibited the highest values of fracture toughness and bending strength, which were 15.2 MPa · m 1/2 and 529 MPa, respectively.

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          Most cited references 15

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          Composite structure modeling and mechanical behavior of particle reinforced metal matrix composites

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            Fabrication and characterisation of Al2O3/aluminium alloy 6061 composites fabricated by Stir casting

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              Investigation of microstructure and mechanical properties of nano MgO reinforced Al composites manufactured by stir casting and powder metallurgy methods: A comparative study

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                Author and article information

                Journal
                ijmr
                International Journal of Materials Research
                Carl Hanser Verlag
                1862-5282
                2195-8556
                12 June 2019
                : 110
                : 6
                : 577-581
                Affiliations
                a School of Materials and Mineral Resources, Xi'an University of Architecture & Technology, Xi'an, P.R. China
                b School of Civil Engineering, Xi'an University of Architecture & Technology, Xi'an, P.R. China
                Author notes
                [] Correspondence address, Yonghua Wu, Xi'an University of Architecture & Technology, No. 13 Yanta Road, XiÀan City, Shannxi Province, P.R. China, Tel.: +86-18189250886, Fax: +86-02982205687, E-mail: 419069496@ 123456qq.com
                [∗∗ ] Chang Chen, Xi'an University of Architecture & Technology, No. 13 Yanta Road, XiÀan City, Shannxi Province, P.R. China, Tel.: +86-15389278941, Fax: +86-02982205687, E-mail: changchen420@ 123456xauat.edu.cn
                Article
                MK111769
                10.3139/146.111769
                © 2019, Carl Hanser Verlag, München
                Page count
                References: 19, Pages: 5
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