Rapid tempering to enhance dynamic performance of high and ultra-high strength steels

IF 5.9 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-05 DOI:10.1016/j.scriptamat.2025.117116

Lawrence Cho , Emily Pittman , Leslie Lamberson , Alec Williamson , David Ulrich , Garrison Hommer , Daniel M. Field , Krista R. Limmer , Kip O. Findley , John G. Speer

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Abstract

This study employed rapid, short-time duration (1 s) tempering to improve the dynamic performance of high-strength steel (HSS) and ultra-high-strength steel (UHSS), compared to quenched and conventionally (1800 s) tempered microstructures. Rapid tempering significantly improved the Charpy toughness of both steels compared to the conventionally tempered condition at an equivalent tempering parameter (TP) or hardness level. For conventionally tempered conditions, tempered martensite embrittlement was observed within the tempering temperature range of 200–400 °C, whereas rapid tempering exhibited increased Charpy toughness with increasing tempering temperature across all tempering conditions. Dynamic compression experiments indicated that rapid tempering led to improved ductility compared to the conventionally tempered condition at an equivalent TP. This work shows that the same rapid tempering strategy used for HSS is directly transferable to a higher-carbon UHSS and provides the first systematic evidence of improved strength-ductility combinations and cracking resistance under dynamic compression, supported by Kolsky bar experiments.

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快速回火以提高高强度和超高强度钢的动态性能

本研究采用快速、短时间（1 s）回火，与淬火和常规（1800 s）回火组织相比，提高了高强钢（HSS）和超高强钢（UHSS）的动态性能。与同等回火参数（TP）或硬度水平下的常规回火条件相比，快速回火显著提高了两种钢的夏比韧性。在常规回火条件下，在200-400°C回火温度范围内观察到回火马氏体脆化，而在所有回火条件下，随着回火温度的升高，快速回火表现出夏比韧性的增加。动态压缩实验表明，在同等TP条件下，与常规回火相比，快速回火可以提高塑性。这项工作表明，用于HSS的相同快速回火策略可直接转移到高碳超高压钢中，并提供了第一个系统的证据，证明在动态压缩下强度-塑性组合和抗裂性得到了科尔斯基棒实验的支持。

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.