Microstructure and Mechanical Properties of Graphene Oxide-Reinforced Titanium Matrix Composites Synthesized by Hot-Pressed Sintering
Abstract Ti matrix composites reinforced with 1–5 wt% graphene oxide (GO) were prepared by hot-pressed sintering in argon atmosphere. The effect of sintering temperature on the microstructures and mechanical properties of the composite was also evaluated. The results show that TiC nanoparticles were...
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2019-03-01
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doaj-7d80d5280fad42fc96c1d4fcd5e236cb2020-11-25T03:15:26ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2019-03-0114111210.1186/s11671-019-2951-9Microstructure and Mechanical Properties of Graphene Oxide-Reinforced Titanium Matrix Composites Synthesized by Hot-Pressed SinteringJingqi Liu0Ning Hu1Xuyang Liu2Yaolu Liu3Xuewei Lv4Liangxiao Wei5Shoutao Zheng6College of Aerospace Engineering, Chongqing UniversityCollege of Aerospace Engineering, Chongqing UniversityCollege of Aerospace Engineering, Chongqing UniversityCollege of Aerospace Engineering, Chongqing UniversityCollege of Materials Science and Engineering, Chongqing UniversityCollege of Aerospace Engineering, Chongqing UniversityCollege of Aerospace Engineering, Chongqing UniversityAbstract Ti matrix composites reinforced with 1–5 wt% graphene oxide (GO) were prepared by hot-pressed sintering in argon atmosphere. The effect of sintering temperature on the microstructures and mechanical properties of the composite was also evaluated. The results show that TiC nanoparticles were formed in situ as interfacial products via the reaction between Ti and GO during sintering. With increases in GO content and sintering temperature, the amount of TiC increased, improving the mechanical properties of the composites. GO was also partly retained with a lamellar structure after sintering. The composite reinforced with 5 wt% GO exhibited a hardness of 457 HV, 48.4% higher than that of pure Ti at 1473 K. The Ti-2.5 wt% GO composite sintered at 1473 K achieved a maximum yield stress of 1294 MPa, which was 62.7 % higher than that of pure Ti. Further increasing the GO content to 5 wt% led to a slight decrease in yield stress owing to GO agglomeration. The fracture morphology of the composite reinforced with GO exhibited a quasi-cleavage fracture, whereas that of the pure Ti matrix showed a ductile fracture. The main strengthening mechanism included grain refinement, solution strengthening, and dispersion strengthening of TiC and GO.http://link.springer.com/article/10.1186/s11671-019-2951-9Titanium matrix compositesGraphene oxideHot-pressed sinteringTiC |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jingqi Liu Ning Hu Xuyang Liu Yaolu Liu Xuewei Lv Liangxiao Wei Shoutao Zheng |
spellingShingle |
Jingqi Liu Ning Hu Xuyang Liu Yaolu Liu Xuewei Lv Liangxiao Wei Shoutao Zheng Microstructure and Mechanical Properties of Graphene Oxide-Reinforced Titanium Matrix Composites Synthesized by Hot-Pressed Sintering Nanoscale Research Letters Titanium matrix composites Graphene oxide Hot-pressed sintering TiC |
author_facet |
Jingqi Liu Ning Hu Xuyang Liu Yaolu Liu Xuewei Lv Liangxiao Wei Shoutao Zheng |
author_sort |
Jingqi Liu |
title |
Microstructure and Mechanical Properties of Graphene Oxide-Reinforced Titanium Matrix Composites Synthesized by Hot-Pressed Sintering |
title_short |
Microstructure and Mechanical Properties of Graphene Oxide-Reinforced Titanium Matrix Composites Synthesized by Hot-Pressed Sintering |
title_full |
Microstructure and Mechanical Properties of Graphene Oxide-Reinforced Titanium Matrix Composites Synthesized by Hot-Pressed Sintering |
title_fullStr |
Microstructure and Mechanical Properties of Graphene Oxide-Reinforced Titanium Matrix Composites Synthesized by Hot-Pressed Sintering |
title_full_unstemmed |
Microstructure and Mechanical Properties of Graphene Oxide-Reinforced Titanium Matrix Composites Synthesized by Hot-Pressed Sintering |
title_sort |
microstructure and mechanical properties of graphene oxide-reinforced titanium matrix composites synthesized by hot-pressed sintering |
publisher |
SpringerOpen |
series |
Nanoscale Research Letters |
issn |
1931-7573 1556-276X |
publishDate |
2019-03-01 |
description |
Abstract Ti matrix composites reinforced with 1–5 wt% graphene oxide (GO) were prepared by hot-pressed sintering in argon atmosphere. The effect of sintering temperature on the microstructures and mechanical properties of the composite was also evaluated. The results show that TiC nanoparticles were formed in situ as interfacial products via the reaction between Ti and GO during sintering. With increases in GO content and sintering temperature, the amount of TiC increased, improving the mechanical properties of the composites. GO was also partly retained with a lamellar structure after sintering. The composite reinforced with 5 wt% GO exhibited a hardness of 457 HV, 48.4% higher than that of pure Ti at 1473 K. The Ti-2.5 wt% GO composite sintered at 1473 K achieved a maximum yield stress of 1294 MPa, which was 62.7 % higher than that of pure Ti. Further increasing the GO content to 5 wt% led to a slight decrease in yield stress owing to GO agglomeration. The fracture morphology of the composite reinforced with GO exhibited a quasi-cleavage fracture, whereas that of the pure Ti matrix showed a ductile fracture. The main strengthening mechanism included grain refinement, solution strengthening, and dispersion strengthening of TiC and GO. |
topic |
Titanium matrix composites Graphene oxide Hot-pressed sintering TiC |
url |
http://link.springer.com/article/10.1186/s11671-019-2951-9 |
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