The Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools

Diamond tools were prepared by sintering Fe-Cu-Sn-Zn-Ni pre-alloyed powders and diamonds. The effects of Ni contents in pre-alloyed powders on microstructure evolution of Fe-based matrix, the properties of Fe-based matrix and the service life of diamond tools were investigated. The results showed th...

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Autores principales:	Juan Pu, Yubo Sun, Weimin Long, Mingfang Wu, Dashuang Liu, Sujuan Zhong, Songbai Xue
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Fe-Cu-Sn-Zn-Ni pre-alloyed powders diamond tools density bending strength holding ability Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/deb4af020aae4bc8895c54b25e65bbdb
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spelling	oai:doaj.org-article:deb4af020aae4bc8895c54b25e65bbdb2021-11-25T17:19:41ZThe Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools10.3390/cryst111114272073-4352https://doaj.org/article/deb4af020aae4bc8895c54b25e65bbdb2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1427https://doaj.org/toc/2073-4352Diamond tools were prepared by sintering Fe-Cu-Sn-Zn-Ni pre-alloyed powders and diamonds. The effects of Ni contents in pre-alloyed powders on microstructure evolution of Fe-based matrix, the properties of Fe-based matrix and the service life of diamond tools were investigated. The results showed that adding 3~15 wt.% Ni into the Fe-Cu-Sn-Zn pre-alloyed powders refined the microstructure of the Fe-based matrix and improved its density and hardness gradually. The addition of Ni reduced the loss of low melting liquid phase at a low sintered temperature, thus resulting in a decrease of the pores, an increase of the density and hardness of Fe-based matrix. When the Ni content is less than 9 wt.%, the bending strength of Fe-based matrix and diamond tools, together with the holding force of Fe-based matrix to diamonds increases sharply. They reached up to the optimal value with the Ni content of 9 wt.%. At this sintering powder ratio, the sufficient Fe-Cu-Sn-Zn-Ni liquid phase had a good wettability on the surface of diamonds, thus the optimal performance of sintered matrix and diamond tools was obtained. The service life of diamond tools was prolonged greatly owing to the excellent bonding capacity between matrix and diamonds. Once the Ni content exceeded 9 wt.%, the corresponding value decreased gradually. The fracture morphologies of the matrix changed from the brittle fracture into brittle-ductile fracture, then ductile fracture (with the Ni content of 9 wt.%), brittle-ductile mixed fracture and brittle fracture.Juan PuYubo SunWeimin LongMingfang WuDashuang LiuSujuan ZhongSongbai XueMDPI AGarticleFe-Cu-Sn-Zn-Ni pre-alloyed powdersdiamond toolsdensitybending strengthholding abilityCrystallographyQD901-999ENCrystals, Vol 11, Iss 1427, p 1427 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Fe-Cu-Sn-Zn-Ni pre-alloyed powders diamond tools density bending strength holding ability Crystallography QD901-999
spellingShingle	Fe-Cu-Sn-Zn-Ni pre-alloyed powders diamond tools density bending strength holding ability Crystallography QD901-999 Juan Pu Yubo Sun Weimin Long Mingfang Wu Dashuang Liu Sujuan Zhong Songbai Xue The Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools
description	Diamond tools were prepared by sintering Fe-Cu-Sn-Zn-Ni pre-alloyed powders and diamonds. The effects of Ni contents in pre-alloyed powders on microstructure evolution of Fe-based matrix, the properties of Fe-based matrix and the service life of diamond tools were investigated. The results showed that adding 3~15 wt.% Ni into the Fe-Cu-Sn-Zn pre-alloyed powders refined the microstructure of the Fe-based matrix and improved its density and hardness gradually. The addition of Ni reduced the loss of low melting liquid phase at a low sintered temperature, thus resulting in a decrease of the pores, an increase of the density and hardness of Fe-based matrix. When the Ni content is less than 9 wt.%, the bending strength of Fe-based matrix and diamond tools, together with the holding force of Fe-based matrix to diamonds increases sharply. They reached up to the optimal value with the Ni content of 9 wt.%. At this sintering powder ratio, the sufficient Fe-Cu-Sn-Zn-Ni liquid phase had a good wettability on the surface of diamonds, thus the optimal performance of sintered matrix and diamond tools was obtained. The service life of diamond tools was prolonged greatly owing to the excellent bonding capacity between matrix and diamonds. Once the Ni content exceeded 9 wt.%, the corresponding value decreased gradually. The fracture morphologies of the matrix changed from the brittle fracture into brittle-ductile fracture, then ductile fracture (with the Ni content of 9 wt.%), brittle-ductile mixed fracture and brittle fracture.
format	article
author	Juan Pu Yubo Sun Weimin Long Mingfang Wu Dashuang Liu Sujuan Zhong Songbai Xue
author_facet	Juan Pu Yubo Sun Weimin Long Mingfang Wu Dashuang Liu Sujuan Zhong Songbai Xue
author_sort	Juan Pu
title	The Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools
title_short	The Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools
title_full	The Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools
title_fullStr	The Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools
title_full_unstemmed	The Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools
title_sort	influence of ni-added fe-based pre-alloy on microstructure evolution and lifetime extension of diamond tools
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/deb4af020aae4bc8895c54b25e65bbdb
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The Influence of Ni-Added Fe-Based Pre-Alloy on Microstructure Evolution and Lifetime Extension of Diamond Tools

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