View in EDS

Achieving high oxidation and hot-cold alternating fatigue resistance die steels via synergistic manipulation of Cr and nanoparticles.

Saved in:
Bibliographic Details
Title: Achieving high oxidation and hot-cold alternating fatigue resistance die steels via synergistic manipulation of Cr and nanoparticles.
Authors: Sun, Jing-Ran1,2 (AUTHOR), Dong, Bai-Xin1,2 (AUTHOR), Yang, Hong-Yu1,2 (AUTHOR) yanghongyu2021@jlu.edu.cn, Fang-Chang1,2 (AUTHOR), Zhong, Xin-Miao1,2 (AUTHOR), Li, Ai-Min3 (AUTHOR), Wang, Cheng-Gang4 (AUTHOR), Li, Zhi-Gang4 (AUTHOR), Meng, Jia5 (AUTHOR), Qiao, Jian6 (AUTHOR), Kang, Jie7 (AUTHOR), Zhu, Ming8 (AUTHOR), Shu, Shi-Li1,9 (AUTHOR), Qiu, Feng1,2 (AUTHOR) qiufeng@jlu.edu.cn, Liu, Lin10 (AUTHOR)
Source: Materials Science & Engineering: A. Oct2025, Vol. 942, pN.PAG-N.PAG. 1p.
Subjects: Fatigue limit, Steelwork, Strains & stresses (Mechanics), Hot working, Oxide coating
Abstract: Hot work die steels are extensively applied in hot forming, where dies are subjected to high temperature and mechanical stresses and are prone to fatigue failure. A novel approach was proposed to synergistically manipulate hot work die steels by increasing Cr content and introducing TiC nanoparticles, showing far superior oxidation resistance and hot-cold alternating fatigue resistance compared to the international high-end DIEVAR die steels. On the one hand, the introduction of ceramic nanoparticles contributed to the enhanced oxidation resistance of the steels by promoting the formation of a thicker and denser Cr 2 O 3 oxide film on the steels surface. On the other hand, the high-temperature microstructure stability and tempering resistance of steels were also improved through microstructure refinement and matrix strengthening. This effectively inhibited the initiation and propagation of hot-cold fatigue cracks, thereby significantly improving the resistance of steels to hot-cold alternating fatigue. This work provides a theoretical basis for understanding the modification of the high-performance hot work die steels. • Synergistically enhanced die steel surpasses international high-end DIEVAR steel. • The oxidation and hot-cold fatigue resistance are simultaneously improved. • Nanoparticles promote the formation of thick and dense Cr-rich layer. • Refined, uniform, and stable microstructure enhances hot-cold fatigue resistance. [ABSTRACT FROM AUTHOR]
Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Hot work die steels are extensively applied in hot forming, where dies are subjected to high temperature and mechanical stresses and are prone to fatigue failure. A novel approach was proposed to synergistically manipulate hot work die steels by increasing Cr content and introducing TiC nanoparticles, showing far superior oxidation resistance and hot-cold alternating fatigue resistance compared to the international high-end DIEVAR die steels. On the one hand, the introduction of ceramic nanoparticles contributed to the enhanced oxidation resistance of the steels by promoting the formation of a thicker and denser Cr 2 O 3 oxide film on the steels surface. On the other hand, the high-temperature microstructure stability and tempering resistance of steels were also improved through microstructure refinement and matrix strengthening. This effectively inhibited the initiation and propagation of hot-cold fatigue cracks, thereby significantly improving the resistance of steels to hot-cold alternating fatigue. This work provides a theoretical basis for understanding the modification of the high-performance hot work die steels. • Synergistically enhanced die steel surpasses international high-end DIEVAR steel. • The oxidation and hot-cold fatigue resistance are simultaneously improved. • Nanoparticles promote the formation of thick and dense Cr-rich layer. • Refined, uniform, and stable microstructure enhances hot-cold fatigue resistance. [ABSTRACT FROM AUTHOR]
ISSN:09215093
DOI:10.1016/j.msea.2025.148689