Effect of Titanium Modification on Microstructure and Impact Toughness of High-Boron Multi-Component Alloy

Xiangyi Ren; Shuli Tang; Hanguang Fu; Jiandong Xing

doi:10.3390/met11020193

Metals (Jan 2021)

Effect of Titanium Modification on Microstructure and Impact Toughness of High-Boron Multi-Component Alloy

Xiangyi Ren,
Shuli Tang,
Hanguang Fu,
Jiandong Xing

Affiliations

Xiangyi Ren: State Key Laboratory of Performance and Structural Safety for Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, China
Shuli Tang: Xi’an Microelectronic Technology Institute, Xi’an 710065, China
Hanguang Fu: Research Institute of Advanced Materials Processing Technology, School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
Jiandong Xing: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China

DOI: https://doi.org/10.3390/met11020193
Journal volume & issue: Vol. 11, no. 2
p. 193

Abstract

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This work investigated the microstructure and mechanical property of high-boron multi-component alloy with Fe, B, C, Cr, Mo, Al, Si, V, Mn and different contents of Ti. The results indicate that the as-cast metallurgical microstructure of high-boron multi-component alloys consist of ferrite, pearlite and borocarbide. In an un-modified alloy, continuous reticular structure of borocarbide is observed. After titanium addition, the structure of borocarbide changes into a fine and isolated morphology. TiC is the existence form of titanium in the alloy, which acts as the heterogeneous nuclei for eutectic borocarbide. Moreover, impact toughness of the alloy is remarkably improved by titanium modification.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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