Next Article in Journal
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
Previous Article in Journal
Torsional Behavior of WaveOne Gold Endodontic File with the Dedicated Motor of the Original WaveOne File
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Materials 2018, 11(7), 1151; https://doi.org/10.3390/ma11071151

Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins

1
Beijing Key Lab of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
2
Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
3
State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, 15 Beisihuan West Road, Beijing 100190, China
4
School of Mechanical and Electrical Engineering, Heilongjiang Institute of Technology, Harbin 150050, China
5
School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
6
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Sichuan 610031, China
7
Shanghai Institute for Minimally Invasive Therapy, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
8
International Joint Laboratory for Light Alloys (Ministry of Education), College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
*
Authors to whom correspondence should be addressed.
Received: 29 May 2018 / Revised: 30 June 2018 / Accepted: 4 July 2018 / Published: 6 July 2018
Full-Text   |   PDF [2519 KB, uploaded 6 July 2018]   |  

Abstract

The change of twinning morphology plays an important role in the modification of Al-Si alloys, which are widely used in industrial applications. However, the interpretation of this change is still insufficient. In this work, the microstructure of twins was investigated in two kinds of Al-Si alloys with different additions of Ba using high-resolution transmission electron microscopy (HRTEM). Unlike the normal {111} twin that exists in Ba-free alloy, discontinuous twins and multiple twins were observed in the Ba-containing alloy. In addition, the 9R structure formed by the dissociation of twins was firstly observed at the turning of discontinuous twins and the intersection of multiple twins in Al-Si alloys. View Full-Text
Keywords: Ag-Si alloy; modification; twinning morphology; 9R structure; HRTEM Ag-Si alloy; modification; twinning morphology; 9R structure; HRTEM
Figures

Figure 1

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

Sha, X.; Chen, X.; Ning, H.; Xiao, L.; Yin, D.; Mao, L.; Zheng, J.; Zhou, H. Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins. Materials 2018, 11, 1151.

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