Effect of TiB2 addition on the mechanical and biological response of spark plasma sintered Ti6Al7Nb matrix composites

被引:5
作者
Singh, N. [1 ,2 ]
Ummethala, Raghunandan [3 ]
Surreddi, Kumar Babu [4 ]
Jayaraj, J. [4 ]
Sokkalingam, Rathinavelu [2 ]
Rajput, Monika [1 ]
Chatterjee, Kaushik [1 ]
Prashanth, K. G. [2 ,5 ,6 ]
机构
[1] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, India
[2] Tallinn Univ Technol, Dept Mech & Ind Engn, Ehitajate Tee 5, EE-19086 Tallinn, Estonia
[3] Natl Inst Technol, Dept Met & Mat Engn, Tadepalligudem 534101, Andhra Pradesh, India
[4] Dalarna Univ, Sch Informat & Technol, Mat Technol, SE-79188 Falun, Sweden
[5] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria
[6] Vellore Inst Technol, Sch Mech Engn, CBCMT, Vellore 632014, Tamil Nadu, India
关键词
Spark plasma sintering; Composite; Strength; In situ reinforcement; Mechanical properties; MICROSTRUCTURE EVOLUTION; TENSILE PROPERTIES; ALLOY; BEHAVIOR; ARCHITECTURE; DEPOSITION; RESISTANCE; SCAFFOLDS; TI-6AL-4V; WHISKERS;
D O I
10.1016/j.jallcom.2022.166502
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In situ fabrication of TiB whiskers (TiBw) reinforced Ti-matrix composites (TMCs) was carried out with the addition of TiB2 particles in Ti6Al7Nb matrix using low energy ball milling and subsequent consolidation via Spark Plasma Sintering (SPS). The ball mixing of 0.5 %, 1.5 %, and 3 % TiB2 resulted in its distribution ratio (RD) of 1.05, 3.2, and 6.5, respectively. The in situ TiBw formations as a reaction between the Ti6Al7Nb matrix and TiB2 particles resulted during sintering. This TiBw inclusion in different regions caused the retardation of grains from growing and resulted in grain refinement. The presence of a stiff TiBw phase in combination with grain refinement was ascribed to the increased hardness and higher strength in the fabricated composites. Maximum hardness (similar to 496 Hv) and strength (similar to 2233 MPa) was achieved in the 3 % TiB2 containing composites among all. The biological response showed better cell adhesion and proliferation without any toxic effect on all fabricated samples when compared to the wrought Ti6Al7Nb. The enhanced cell proliferation on the TiBw composites than the pure alloy demonstrates them as promising materials for biomedical applications. (C) 2022 Elsevier B.V. All rights reserved.
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页数:12
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