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Effect of Multi-Element Microalloying on the Structure and Properties of High Chromium Cast Iron

High chromium cast iron (HCCI) has been widely used as wear-resistant material in the industry. Alloying is an effective way to improve the microstructure and mechanical properties of HCCI. This paper added multi-component V-Fe-Ti-Nb-C-Zr-B alloy (VFC) to HCCI, showing a significant synergistic solu...

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Autores principales: Liu, Tao, Sun, Jibing, Xiao, Zhixia, He, Jun, Shi, Weidong, Cui, Chunxiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179138/
https://www.ncbi.nlm.nih.gov/pubmed/37176174
http://dx.doi.org/10.3390/ma16093292
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author Liu, Tao
Sun, Jibing
Xiao, Zhixia
He, Jun
Shi, Weidong
Cui, Chunxiang
author_facet Liu, Tao
Sun, Jibing
Xiao, Zhixia
He, Jun
Shi, Weidong
Cui, Chunxiang
author_sort Liu, Tao
collection PubMed
description High chromium cast iron (HCCI) has been widely used as wear-resistant material in the industry. Alloying is an effective way to improve the microstructure and mechanical properties of HCCI. This paper added multi-component V-Fe-Ti-Nb-C-Zr-B alloy (VFC) to HCCI, showing a significant synergistic solution-strengthening effect. The results show that the added V-Ti-Nb-B are dissolved in M(7)C(3) carbide to form the (Cr, Fe, V, Ti, Nb)(7)(C, B)(3) alloy carbide, and a small amount of V and all Zr are dissolved in austenite and martensite. Adding VFC into HCCI improved the hardenability of HCCI, decreased the residual austenite content from 6.0 wt% to 0.9 wt%, increased the martensite content from 70.7 wt% to 82.5 wt%, and changed the structure and content of M(7)C(3) carbide. These changes increased the hardness of as-cast and heat-tread HCCI by 1.4% and 4.1%, increased the hardness of austenite and martensite by 7.9% and 7.0%, increased the impact toughness by 16.9%, and decreased the friction coefficient and wear loss by 2.3 % and 7.0 %, respectively. Thus, the hardness, toughness, wear resistance, and friction resistance of HCCI alloy are improved simultaneously.
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spelling pubmed-101791382023-05-13 Effect of Multi-Element Microalloying on the Structure and Properties of High Chromium Cast Iron Liu, Tao Sun, Jibing Xiao, Zhixia He, Jun Shi, Weidong Cui, Chunxiang Materials (Basel) Article High chromium cast iron (HCCI) has been widely used as wear-resistant material in the industry. Alloying is an effective way to improve the microstructure and mechanical properties of HCCI. This paper added multi-component V-Fe-Ti-Nb-C-Zr-B alloy (VFC) to HCCI, showing a significant synergistic solution-strengthening effect. The results show that the added V-Ti-Nb-B are dissolved in M(7)C(3) carbide to form the (Cr, Fe, V, Ti, Nb)(7)(C, B)(3) alloy carbide, and a small amount of V and all Zr are dissolved in austenite and martensite. Adding VFC into HCCI improved the hardenability of HCCI, decreased the residual austenite content from 6.0 wt% to 0.9 wt%, increased the martensite content from 70.7 wt% to 82.5 wt%, and changed the structure and content of M(7)C(3) carbide. These changes increased the hardness of as-cast and heat-tread HCCI by 1.4% and 4.1%, increased the hardness of austenite and martensite by 7.9% and 7.0%, increased the impact toughness by 16.9%, and decreased the friction coefficient and wear loss by 2.3 % and 7.0 %, respectively. Thus, the hardness, toughness, wear resistance, and friction resistance of HCCI alloy are improved simultaneously. MDPI 2023-04-22 /pmc/articles/PMC10179138/ /pubmed/37176174 http://dx.doi.org/10.3390/ma16093292 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Tao
Sun, Jibing
Xiao, Zhixia
He, Jun
Shi, Weidong
Cui, Chunxiang
Effect of Multi-Element Microalloying on the Structure and Properties of High Chromium Cast Iron
title Effect of Multi-Element Microalloying on the Structure and Properties of High Chromium Cast Iron
title_full Effect of Multi-Element Microalloying on the Structure and Properties of High Chromium Cast Iron
title_fullStr Effect of Multi-Element Microalloying on the Structure and Properties of High Chromium Cast Iron
title_full_unstemmed Effect of Multi-Element Microalloying on the Structure and Properties of High Chromium Cast Iron
title_short Effect of Multi-Element Microalloying on the Structure and Properties of High Chromium Cast Iron
title_sort effect of multi-element microalloying on the structure and properties of high chromium cast iron
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179138/
https://www.ncbi.nlm.nih.gov/pubmed/37176174
http://dx.doi.org/10.3390/ma16093292
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