Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded Coatings

The growth and propagation behavior of austenite-to-bainite isothermal transformation in laser-cladded, Si-rich, and Fe-based coatings is investigated. The crystallographic features, orientation relationship at different isothermal temperatures, and the morphology of the nanostructured bainite are d...

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Main Authors:	Yanbing Guo, Chengwu Yao, Kai Feng, Zhuguo Li, Paul K. Chu, Yixiong Wu
Format:	Article
Language:	English
Published:	MDPI AG 2017-07-01
Series:	Materials
Subjects:	nanostructured bainite sheaves growth behavior laser cladded coating orientation relationship
Online Access:	https://www.mdpi.com/1996-1944/10/7/800

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spelling	doaj-50b3bed0e6a24ce8913fce70fb7158de2020-11-24T23:11:56ZengMDPI AGMaterials1996-19442017-07-0110780010.3390/ma10070800ma10070800Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded CoatingsYanbing Guo0Chengwu Yao1Kai Feng2Zhuguo Li3Paul K. Chu4Yixiong Wu5School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, ChinaShanghai Key Lab of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShanghai Key Lab of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShanghai Key Lab of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaDepartment of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong, ChinaShanghai Key Lab of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThe growth and propagation behavior of austenite-to-bainite isothermal transformation in laser-cladded, Si-rich, and Fe-based coatings is investigated. The crystallographic features, orientation relationship at different isothermal temperatures, and the morphology of the nanostructured bainite are determined. The Nishiyama-Wassermann type orientation relationship is observed at a high temperature and at a low temperature, and mixed Nishiyama-Wassermann and Kurdjumov-Sach mechanisms are seen. The growth direction is investigated by the partial dislocation theory and an extrapolated model based on the repeated formation of lenticular-shaped subunits and pile-up along the close-packed directions of the close-packed planes. The variants of the bainite growth directions would be more selective at the high transformation temperature.https://www.mdpi.com/1996-1944/10/7/800nanostructured bainitesheavesgrowth behaviorlaser cladded coatingorientation relationship
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yanbing Guo Chengwu Yao Kai Feng Zhuguo Li Paul K. Chu Yixiong Wu
spellingShingle	Yanbing Guo Chengwu Yao Kai Feng Zhuguo Li Paul K. Chu Yixiong Wu Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded Coatings Materials nanostructured bainite sheaves growth behavior laser cladded coating orientation relationship
author_facet	Yanbing Guo Chengwu Yao Kai Feng Zhuguo Li Paul K. Chu Yixiong Wu
author_sort	Yanbing Guo
title	Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded Coatings
title_short	Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded Coatings
title_full	Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded Coatings
title_fullStr	Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded Coatings
title_full_unstemmed	Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded Coatings
title_sort	effect of isothermal temperature on growth behavior of nanostructured bainite in laser cladded coatings
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2017-07-01
description	The growth and propagation behavior of austenite-to-bainite isothermal transformation in laser-cladded, Si-rich, and Fe-based coatings is investigated. The crystallographic features, orientation relationship at different isothermal temperatures, and the morphology of the nanostructured bainite are determined. The Nishiyama-Wassermann type orientation relationship is observed at a high temperature and at a low temperature, and mixed Nishiyama-Wassermann and Kurdjumov-Sach mechanisms are seen. The growth direction is investigated by the partial dislocation theory and an extrapolated model based on the repeated formation of lenticular-shaped subunits and pile-up along the close-packed directions of the close-packed planes. The variants of the bainite growth directions would be more selective at the high transformation temperature.
topic	nanostructured bainite sheaves growth behavior laser cladded coating orientation relationship
url	https://www.mdpi.com/1996-1944/10/7/800
work_keys_str_mv	AT yanbingguo effectofisothermaltemperatureongrowthbehaviorofnanostructuredbainiteinlasercladdedcoatings AT chengwuyao effectofisothermaltemperatureongrowthbehaviorofnanostructuredbainiteinlasercladdedcoatings AT kaifeng effectofisothermaltemperatureongrowthbehaviorofnanostructuredbainiteinlasercladdedcoatings AT zhuguoli effectofisothermaltemperatureongrowthbehaviorofnanostructuredbainiteinlasercladdedcoatings AT paulkchu effectofisothermaltemperatureongrowthbehaviorofnanostructuredbainiteinlasercladdedcoatings AT yixiongwu effectofisothermaltemperatureongrowthbehaviorofnanostructuredbainiteinlasercladdedcoatings
_version_	1725603371455348736

Effect of Isothermal Temperature on Growth Behavior of Nanostructured Bainite in Laser Cladded Coatings

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