Effect on microstructure and properties of carbon-free high-speed steel via hot isostatic pressing and subsequent heat treatment

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-09-12 DOI:10.1007/s10853-025-11507-z

Lei Gao, Xueyuan Ge, Chunguo Xu, Shiteng Lu

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Abstract

Fe-Co-Mo carbon-free high-speed steel bulk materials were fabricated using hot isostatic pressing (HIP) in this study. The effect of heat treatment processes on its microstructure and properties was investigated. The microstructure of matrix and the precipitation behavior of intermetallic compounds in different conditions were characterized using techniques such as SEM, EBSD, and TEM, and mechanical properties were conducted on its hardness and three-point bending strength. The results indicate that the HIP temperature and annealing temperature significantly influence the microstructure and properties. Fe-Co-Mo carbon-free high-speed steel prepared at a HIP temperature of 1200 °C and an annealing temperature of 900 °C exhibited finer precipitated phases with a more uniform and dispersed distribution. After subsequent quenching-tempering heat treatment, the material achieved a microhardness of 878.3 HV and a three-point bending strength of 2988 MPa. This research provides valuable theoretical guidance for the development of novel Fe-Co-Mo carbon-free high-speed steel materials.

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热等静压及后续热处理对无碳高速钢组织和性能的影响

采用热等静压法制备了Fe-Co-Mo无碳高速钢块状材料。研究了热处理工艺对其组织和性能的影响。利用SEM、EBSD和TEM等技术表征了基体的微观结构和不同条件下金属间化合物的析出行为，并对基体的硬度和三点抗弯强度进行了力学性能测试。结果表明，热处理温度和退火温度对合金的组织和性能有显著影响。热处理温度为1200℃、退火温度为900℃时制备的Fe-Co-Mo无碳高速钢析出相更细、分布更均匀、更分散。经后续调质热处理后，材料显微硬度达到878.3 HV，三点抗弯强度达到2988 MPa。该研究为新型Fe-Co-Mo无碳高速钢材料的开发提供了有价值的理论指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.