title: Effect of Al content on impact resistance behavior of Al-Ti-B4C composite fabricated under air atmosphere.
abstract: Reaction behavior, mechanical property and impact resistance of TiC-TiB2/Al composite reacted from Al-Ti-B4C system with various Al content via combination method of combustion synthesis and hot pressed sintering under air was investigated. Al content was the key point to the variation of mechanical property and impact resistance. Increasing Al content could increase the density, strength and toughness of the composite. Due to exorbitant ceramic content, 10wt.% and 20wt.% Al-Ti-B4C composites exhibited poor molding ability and machinability. Flexural strength, fracture toughness, compressive strength and impact toughness of 30-50wt.% Al-Ti-B4C composite were higher than those of Al matrix. The intergranular fracture dispersed and defused impact load and restricted crack extension, enhancing the impact resistance of the composite. The composite with 50wt.% Al content owned highest mechanical properties and impact resistance. The results were useful for the application of TiC-TiB2/Al composite in impact resistance field of ceramic reinforced Al matrix composite.
authors.affiliation: The Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: The Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China; School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester, M139PL, United Kingdom. Electronic address: liangyunhong@jlu.edu.cn.
authors.forename: Yunhong
authors.initials: Y
authors.lastname: Liang
authors.affiliation: The Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China; State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China.
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: The Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China.
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Li
authors.affiliation: The Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China.
authors.forename: Luquan
authors.initials: L
authors.lastname: Ren
keywords: Al matrix composite; Ceramic; Impact resistance; Mechanical properties