Advanced   Register
IMR OpenIR  > 中国科学院金属研究所  > 期刊论文

题名: Cold spray additive manufacturing: A viable strategy to fabricate thick B4C/Al composite coatings for neutron shielding applications
作者: Tariq, NH;  Gyansah, L;  Wang, JQ;  Qiu, X;  Feng, B;  Siddique, MT;  Xiong, TY
发表日期: 2018-4-15
摘要: This paper presents a design flexible, innovative strategy that can be used for the development, restoration and/or repairing of neutron shielding products in the near future. Cold spray additive manufacturing technique was employed to deposit a 6 mm thick neutron shielding B4C/Al composite coating on a 6061-T6 cylindrical substrate. Microstructure, mechanical behavior and neutron shielding performance of the free standing coating were investigated at different heat treatment conditions in the order: 200, 300, 400 and 500 degrees C. Microstructure evolutions were characterized using scanning electron microscopy (SEM), electron backscattered diffraction (EBSD), laser confocal scanning microscopy (LSM), X-ray diffraction (XRD) techniques, while mechanical properties were investigated via tensile and hardness tests. It was revealed that due to the presence of large amount of inter-splats' defects and intensive cold working, the as-deposited coating exhibited poor strength and fractured in a brittle manner. Moreover, as the heat treatment temperature was increased, the coating gradually recovered the ductility and gained strength due to progressive bonding/healing of inter-splat boundaries through recovery and recrystallization mechanisms. The coating heat-treated at 500 degrees C displayed maximum ductility (1.4%) and strength (60 MPa) with minimum porosity level of 1.9%. Neutron shielding results showed attenuation of thermal neutrons with increasing sample thickness. Neutron shielding results also displayed a slight improvement in the neutron shielding performance of the sample heat-treated at 500 degrees C.
刊名: SURFACE & COATINGS TECHNOLOGY
Appears in Collections:中国科学院金属研究所_期刊论文

Files in This Item:

There are no files associated with this item.




Recommended Citation:
Tariq, NH,Gyansah, L,Wang, JQ,et al. Cold Spray Additive Manufacturing: A Viable Strategy To Fabricate Thick B4c/al Composite Coatings For Neutron Shielding Applications[J]. Surface & Coatings Technology,2018,339:224-236.

SCI Citaion Data:
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Tariq, NH]'s Articles
 [Gyansah, L]'s Articles
 [Wang, JQ]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Tariq, NH]‘s Articles
 [Gyansah, L]‘s Articles
 [Wang, JQ]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院金属研究所  -Feedback
Powered by CSpace