Controlled Interfacial Reactions and Superior Mechanical Properties of High Energy Ball Milled/Spark Plasma Sintered Ti–6Al–4V–Graphene Composite

Zhou, Yue, Dong, Longlong, Yang, Qinghao, Huo, Wangtu, Fu, Richard, Yu, Jiashi, Liu, Yue and Zhang, Yusheng (2021) Controlled Interfacial Reactions and Superior Mechanical Properties of High Energy Ball Milled/Spark Plasma Sintered Ti–6Al–4V–Graphene Composite. Advanced Engineering Materials, 23 (6). p. 2001411. ISSN 1438-1656

[img] Text
Adv Engng Mater final accepted version.pdf - Accepted Version
Restricted to Repository staff only until 17 March 2022.

Download (2MB) | Request a copy
Official URL: https://doi.org/10.1002/adem.202001411

Abstract

Ball milling process has become one of the effective methods for dispersing graphene nanoplates (GNPs) uniformly into matrix; however, there are often serious issues of structural integrity and interfacial reactions of GNPs with matrix. Herein, GNPs/Ti‐6Al‐4V (GNPs/TC4) composites are synthesized using high energy ball milling (HEBM) and spark plasma sintering. Effects of ball milling on microstructural evolution and interfacial reactions of GNPs/TC4 composite powders during HEBM are investigated. As ball milling time increase, particles size of TC4 is first increased (e.g., ≈104.15 μm, 5 h), but then decreased to ≈1.5 μm (15 h), which is much smaller than that of original TC4 powders (≈86.8 μm). TiC phases are in situ formed on the surfaces of TC4 particles when ball milling time is 10Thinsp;h. GNPs/TC4 composites exhibit 36–103% increase in compressive yield strength and 57–78% increase in hardness than those of TC4 alloy, whereas the ductility is reduced from 28% to 7% with an increase of ball milling time (from 2 to 15 h). A good balance between high strength (1.9 GPa) and ductility (17%) of GNPs/TC4 composites is achieved when the ball milling time is 10 h, attributing to the synergistic effects of grain refinement strengthening, solid solution strengthening, and load transfer strengthening from GNPs and in situ formed TiC.

Item Type: Article
Additional Information: Funding information: This work was supported by the National Natural Science Foundation of China (No. 51901192), Key Research and Development Projects of Shaanxi Province (No. 2019GY-164), Science and Technology Project of Weiyang District of Xi'an City (No. 201857), as well as Newton Mobility Grant (No. IE161019) through Royal Society and the National Natural Science Foundation of China.
Uncontrolled Keywords: spark plasma sintering, mechanical properties, interfacial reaction, ball milling
Subjects: F300 Physics
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Rachel Branson
Date Deposited: 29 Mar 2021 15:26
Last Modified: 19 Aug 2021 16:15
URI: http://nrl.northumbria.ac.uk/id/eprint/45823

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics