等温淬火结构钢中残余奥氏体的热稳定性

IF 0.5 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metal Science and Heat Treatment Pub Date : 2025-07-29 DOI:10.1007/s11041-025-01123-8

A. Yu. Kaletin, Yu. V. Kaletina

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引用次数: 0

摘要

研究了贝氏体相变等温硬化温度-时间参数对38KhS （38CrSi）和60S2 （60Si2）少合金结构钢残余奥氏体热稳定性和冲击韧性的影响。钢中残余奥氏体的量是用磁力法测定的。研究了箔片的精细结构。对试样进行了冲击弯曲试验。结果表明，残余奥氏体薄片在液氮温度下的热稳定性与等温硬化后钢的冲击韧性有关。提出了一种评估等温淬火结构钢冲击韧性的磁性方法。

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Thermal Stability of Retained Austenite in Isothermally Hardened Structural Steels

The effect of temperature-time parameters of isothermal hardening in the bainitic transformation range on the thermal stability of retained austenite and impact toughness of sparingly alloyed structural steels 38KhS (38CrSi) and 60S2 (60Si2) is studied. The amount of retained austenite in the steels is determined by a magnetometric method. The fine structure of foils is investigated. Impact bending tests of samples are carried out. It is shown that the thermal stability of the thin foils of retained austenite at liquid nitrogen temperature correlates with the impact toughness of the steels after the isothermal hardening. A magnetic method for assessing the impact toughness of an isothermally hardened structural steel is suggested.

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来源期刊

Metal Science and Heat Treatment 工程技术-冶金工程

CiteScore

1.20

自引率

16.70%

发文量

102

审稿时长

4-8 weeks

期刊介绍： Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering. Topics covered include: New structural, high temperature, tool and precision steels; Cold-resistant, corrosion-resistant and radiation-resistant steels; Steels with rapid decline of induced properties; Alloys with shape memory effect; Bulk-amorphyzable metal alloys; Microcrystalline alloys; Nano materials and foam materials for medical use.