The effect of nickel on the carbide precipitation behavior in Cr–Mo–V hot-working die steel
The addition of small amount of nickel to hot-working die steel has been found to be beneficial for hardenability and toughness. In this paper, the addition of nickel to Cr–Mo–V hot-working die steel was studied to improve hardenability, and the inherent mechanism of enhancing toughness was further...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423026789 |
| _version_ | 1827346091094310912 |
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| author | Wei Gong Jianbo Yue Jialong Tian Jun Liao Yang Yu Zhouhua Jiang |
| author_facet | Wei Gong Jianbo Yue Jialong Tian Jun Liao Yang Yu Zhouhua Jiang |
| author_sort | Wei Gong |
| collection | DOAJ |
| description | The addition of small amount of nickel to hot-working die steel has been found to be beneficial for hardenability and toughness. In this paper, the addition of nickel to Cr–Mo–V hot-working die steel was studied to improve hardenability, and the inherent mechanism of enhancing toughness was further explored. The research results indicate that nickel as a non-carbide-forming element does not alter the type and total amount of carbide precipitation at equilibrium, but it can dissolve into the matrix and form substitutional lattice distortions with Fe atoms, promoting the dispersion of secondary carbides during the tempering process. This mechanism can reduce intergranular precipitation and inhibit grain boundary embrittlement, thereby improving toughness. However, it can also accelerate the precipitation, aggregation, and growth of secondary carbides during prolonged tempering, which deteriorates the high-temperature anti-softening properties of die steels. The role of Ni has been revealed through thermodynamic and kinetic calculations. The results show that Ni significantly enhances the diffusion coefficient of Cr atoms in the face centered cubic (fcc) Fe matrix during tempering and also improves the phase transition driving force of various precipitates. This work provides new insights into the mechanism of Ni in hot-working die steels, and can provide guidance for designing novel hot-working die steel. |
| first_indexed | 2024-03-07T23:23:10Z |
| format | Article |
| id | doaj.art-b55765f2e1d64d0a93e3f4fd7961caa6 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-07T23:23:10Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-b55765f2e1d64d0a93e3f4fd7961caa62024-02-21T05:26:54ZengElsevierJournal of Materials Research and Technology2238-78542023-11-012744524460The effect of nickel on the carbide precipitation behavior in Cr–Mo–V hot-working die steelWei Gong0Jianbo Yue1Jialong Tian2Jun Liao3Yang Yu4Zhouhua Jiang5School of Metallurgy, Northeastern University, Shenyang, 110819, PR ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110819, PR ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110819, PR China; Corresponding author.Jiangsu Tiangong Tools New Materials Corp Ltd, Danyang, 212312, PR ChinaJiangsu Tiangong Tools New Materials Corp Ltd, Danyang, 212312, PR ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110819, PR China; Corresponding author.The addition of small amount of nickel to hot-working die steel has been found to be beneficial for hardenability and toughness. In this paper, the addition of nickel to Cr–Mo–V hot-working die steel was studied to improve hardenability, and the inherent mechanism of enhancing toughness was further explored. The research results indicate that nickel as a non-carbide-forming element does not alter the type and total amount of carbide precipitation at equilibrium, but it can dissolve into the matrix and form substitutional lattice distortions with Fe atoms, promoting the dispersion of secondary carbides during the tempering process. This mechanism can reduce intergranular precipitation and inhibit grain boundary embrittlement, thereby improving toughness. However, it can also accelerate the precipitation, aggregation, and growth of secondary carbides during prolonged tempering, which deteriorates the high-temperature anti-softening properties of die steels. The role of Ni has been revealed through thermodynamic and kinetic calculations. The results show that Ni significantly enhances the diffusion coefficient of Cr atoms in the face centered cubic (fcc) Fe matrix during tempering and also improves the phase transition driving force of various precipitates. This work provides new insights into the mechanism of Ni in hot-working die steels, and can provide guidance for designing novel hot-working die steel.http://www.sciencedirect.com/science/article/pii/S2238785423026789Hot-working die steelNi elementAnti-softening propertyImpact toughnessThermodynamic and kinetic calculations |
| spellingShingle | Wei Gong Jianbo Yue Jialong Tian Jun Liao Yang Yu Zhouhua Jiang The effect of nickel on the carbide precipitation behavior in Cr–Mo–V hot-working die steel Journal of Materials Research and Technology Hot-working die steel Ni element Anti-softening property Impact toughness Thermodynamic and kinetic calculations |
| title | The effect of nickel on the carbide precipitation behavior in Cr–Mo–V hot-working die steel |
| title_full | The effect of nickel on the carbide precipitation behavior in Cr–Mo–V hot-working die steel |
| title_fullStr | The effect of nickel on the carbide precipitation behavior in Cr–Mo–V hot-working die steel |
| title_full_unstemmed | The effect of nickel on the carbide precipitation behavior in Cr–Mo–V hot-working die steel |
| title_short | The effect of nickel on the carbide precipitation behavior in Cr–Mo–V hot-working die steel |
| title_sort | effect of nickel on the carbide precipitation behavior in cr mo v hot working die steel |
| topic | Hot-working die steel Ni element Anti-softening property Impact toughness Thermodynamic and kinetic calculations |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423026789 |
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