Next Article in Journal
Electro-Superplastic Solid State Welding of 40Cr/QCr0.5
Previous Article in Journal
Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins
Previous Article in Special Issue
Improved Formability of Mg-AZ80 Alloy under a High Strain Rate in Expanding-Ring Experiments
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Materials 2018, 11(7), 1152; https://doi.org/10.3390/ma11071152

Elasto-Plastic Mechanical Properties and Failure Mechanism of Innovative Ti-(SiCf/Al3Ti) Laminated Composites for Sphere-Plane Contact at the Early Stage of Penetration Process

1
College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
2
Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
3
College of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
*
Author to whom correspondence should be addressed.
Received: 24 May 2018 / Revised: 29 June 2018 / Accepted: 2 July 2018 / Published: 6 July 2018
(This article belongs to the Special Issue Intermetallic Alloys: Fabrication, Properties and Applications 2017)

Abstract

A novel silicon carbide (SiC) continuous ceramic fiber-reinforced (CCFR) Ti/Al3Ti Metal-Intermetallic-Laminate (MIL) composite was fabricated. A high-efficiency semi-analytical model was proposed based on the numerical equivalent inclusion method (NEIM) for analyzing the small-strain elasto-plastic contact in the early stage of the penetration process. The microstructure and interface features were characterized by the scanning electron microscopy (SEM). Quasi-static compression tests were performed to determine the contact response and validate the proposed model. A group of in-depth parametric studies were carried out to quantify the influence of the microstructure. The comparison between results under the sphere-plane and plane-plane contact load indicates that, under the first sphere-plane, the compressive strength and failure strain are both lower and the SiC reinforcement effect on strength is very clear while the effect on ductility is not clear. The maximum plastic strain concentration (MPSC) in the Al3Ti layer is closest to the upper boundary of the central SiC fiber and then extends along the depth direction as the load increases, which are also the locations where cracks may initiate and extend. Moreover, the CCFR-MIL composite shows better mechanical properties when the center distance between adjacent SiC fibers is four times the fiber diameter and the volume fraction of Ti is 40%. View Full-Text
Keywords: continuous SiC fiber; Ti/Al3Ti Metal-Intermetallic-Laminate (MIL) composite; microstructure characterization; elasto-PLASTIC mechanical properties; numerical equivalent inclusion method continuous SiC fiber; Ti/Al3Ti Metal-Intermetallic-Laminate (MIL) composite; microstructure characterization; elasto-PLASTIC mechanical properties; numerical equivalent inclusion method
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Liu, J.; Zhang, L.; Jiang, F.; Zhang, M.; Wang, L.; Yun, F. Elasto-Plastic Mechanical Properties and Failure Mechanism of Innovative Ti-(SiCf/Al3Ti) Laminated Composites for Sphere-Plane Contact at the Early Stage of Penetration Process. Materials 2018, 11, 1152.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top