TY - JOUR
T1 - Reaction kinetics of three-dimensional interface in graphene nanoplatelets reinforced titanium (GNPs/Ti) composites as revealed by in situ TEM heating experiments
AU - Liu, Liang
AU - Li, Yunkai
AU - Zhang, Hongmei
AU - Cheng, Xingwang
AU - Fan, Qunbo
AU - Mu, Xiaonan
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/12
Y1 - 2022/12
N2 - Interface reaction between matrix and reinforcement plays a crucial role in determining the mechanical properties of graphene nanoplatelets reinforced titanium (GNPs/Ti) composites. Manipulation of the micro-scaled structure of three-dimensional (3D) interface has been shown to provide GNPs/Ti composites with enhanced interfacial adhesion and stronger strain accommodation behaviors. In order to understand the kinetics of such interface reactions, and provide a new guidance for the meticulous design of 3D interface in GNPs/Ti composites. In this study, in situ TEM heating was used to uncover the evolutions of 3D interface microstructure and make direct and real-time measurements of the interfacial reaction products (TiC and TiB whiskers, TiBw). Experimental results indicated that GNPs modified with B film had decelerated the tendency of GNPs-Ti interface reaction. The calculated diffusion coefficient for B in TiBw DBTiBw(1123K) along the needle direction was about 12.5 times larger than that of DBTiBw(1053K). The interfacial mechanics behaviors related to diverse heat treatments were deeply studied by means of the micro-pillar compression tests. Combined with the interfacial densification degree and mechanics behaviors, this study had formulated the optimized regime for accurately constructing ideal 3D interface structure, and highlighted a feasible route for achieving good mechanical properties in GNPs/Ti composites.
AB - Interface reaction between matrix and reinforcement plays a crucial role in determining the mechanical properties of graphene nanoplatelets reinforced titanium (GNPs/Ti) composites. Manipulation of the micro-scaled structure of three-dimensional (3D) interface has been shown to provide GNPs/Ti composites with enhanced interfacial adhesion and stronger strain accommodation behaviors. In order to understand the kinetics of such interface reactions, and provide a new guidance for the meticulous design of 3D interface in GNPs/Ti composites. In this study, in situ TEM heating was used to uncover the evolutions of 3D interface microstructure and make direct and real-time measurements of the interfacial reaction products (TiC and TiB whiskers, TiBw). Experimental results indicated that GNPs modified with B film had decelerated the tendency of GNPs-Ti interface reaction. The calculated diffusion coefficient for B in TiBw DBTiBw(1123K) along the needle direction was about 12.5 times larger than that of DBTiBw(1053K). The interfacial mechanics behaviors related to diverse heat treatments were deeply studied by means of the micro-pillar compression tests. Combined with the interfacial densification degree and mechanics behaviors, this study had formulated the optimized regime for accurately constructing ideal 3D interface structure, and highlighted a feasible route for achieving good mechanical properties in GNPs/Ti composites.
KW - Graphene nanoplatelets
KW - Interface reactions
KW - Interfacial mechanics behaviors
KW - Three-dimensional interface
KW - Ti matrix composites
UR - http://www.scopus.com/inward/record.url?scp=85138065837&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2022.110237
DO - 10.1016/j.compositesb.2022.110237
M3 - Article
AN - SCOPUS:85138065837
SN - 1359-8368
VL - 247
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
M1 - 110237
ER -
