Achieving superior mechanical property and large adjustability in a metalloid-free FeCrNi alloy
Rattachement africain : cn. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Advanced structural alloys with high performance and large property adjustability are desired for engineering applications. However, traditional multi-micro-alloying metallurgy depends on the specific manufacturing technique, leading to the narrow processing window, poor welding ability and structural stability. In this proof-of-concept study, a simplified 72.9Fe-18.7Cr-8.4Ni (wt.%) alloy with outstanding mechanical performances and adjustability was designed, via a compositional simplification strategy. The facile adjustment of transformation-induced plasticity (TRIP) and hetero-deformation induced (HDI) hardening effects enables the combination of superior yield strength, uniform elongation, product of strength and elongation (PSE), ranging largely from 270 to 1440 MPa, 1.3% to 21.5%, and 4.9-20.5 GPa·%. The super-high strength, large ductility, and optimal structure-property synergy are readily obtained in the high-density dislocation strengthened cold-rolled sample, recrystallized coarse-grained sample and dual-phase hetero-structured (DPHS) sample with soft FCC (63%) and hard BCC (37%) phases respectively. The optimized HDI hardening effect endows the high-strength over 900 MPa and large PSE beyond 16 GPa·% of the DPHS, over-performing the conventional homogeneous structured counterpart. Prominent strengthening and toughening attribute to the synergistic enhancement of dislocation strengthening, HDI hardening and deformation induced martensite transformation mechanisms. Such composition simplification and multi-principle-component design strategies accord well with the emerging green metallurgy strategy without introducing micro-alloying elements such as carbon, and uncouple common property trade-offs for superior mechanical properties and large adjustability in the next-generation alloy.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Achieving superior mechanical property and large adjustability in a metalloid-free FeCrNi alloy
- Date Crossref
- 01/05/2026
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
Dongguan University of Technology pays non établi dans la noticeUniversité ou école supérieure
-
Xinjiang University pays non établi dans la noticeUniversité ou école supérieure
-
Nanjing University of Science and Technology pays non établi dans la noticeUniversité ou école supérieure
-
Guangdong University of Technology Analysis and Test Center pays non établi dans la noticeUniversité ou école supérieure
-
China Guangzhou Analysis and Testing Center pays non établi dans la noticeInstitution
-
University of Science and Technology of China Hefei National Research Center for Physical Sciences at the Microscale and Department of Physics pays non établi dans la noticeUniversité ou école supérieure
-
Hefei National Center for Physical Sciences at Nanoscale pays non établi dans la noticeStructure de recherche
-
Research Institute of Interdisciplinary Science & School of Materials Science and Engineering Nano and Heterogeneous Materials Center pays non établi dans la noticeUniversité ou école supérieure
-
Xinjiang Key Laboratory of Advanced Metallic Materials Design and Application & School of Materials Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
Dongguan University of Technology, Xinjiang University et Nanjing University of Science and Technology, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.