Achieving highly homogenous large-size 2.3 GPa ultra-high strength steel by composite shear flow casting: Numerical simulation and experiment

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-02-06 DOI:10.1016/j.matlet.2025.138190

Yanlin Wang , Bowei Zhang , Yunhao Liang , Youxing He , Jun Zhao , Xiaohua Zhou , Xiaolu Pang , Zidong Wang

引用次数: 0

Abstract

Ultra-high strength steels are widely used in various industries to meet the demands of lightweight and safe infrastructure, but the ingot size limits its application. Here we develop a highly homogenous 200 kg scale large-size ingot for high Co-Ni secondary hardening steels with 2.3 GPa tensile strength, 1.9 GPa yield strength and 10.3 % elongation by composite shear flow casting technology based on numerical simulation analysis. Numerical results fit well with experimental date and the columnar crystal area of ingot is successively diminished and replaced by equiaxed structures. The excellent mechanical property was attributed to the synergy benefits of high density M₂C carbides dispersed in the tempered martensitic matrix with high dislocation density.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive