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一、前言 1972年以来,许多研究者报导了淬火温度对钢机械性能的影响,尤其是对钢断裂韧性K_(1C)的影响,但这些报导讨论的问题往往集中在超高温淬火提高钢断裂韧性的原因及其影响因素,以及随着淬火温度升高K_(1C)及CVN变化的不一致性等问题上,至于高温淬火在生产上的应用,不同淬火回火温度对钢组织性能影响的规律,却报导较少。本文的目的是较全面地研究30CrNi2MoVA高强度低合金钢经不同温度淬
I. Preface Since 1972, many researchers have reported the influence of quenching temperature on the mechanical properties of steel, especially the fracture toughness of K_ (1C). However, the problems discussed in these reports tend to focus on the ultra-high temperature quenching to improve the fracture toughness of steel The reasons and influencing factors of the quenching and tempering process, as well as the inconsistencies in the changes of K1C and CVN with the increase of quenching temperature. As for the application of high-temperature quenching in production and the influence of different quenching and tempering temperatures on the microstructure and properties of steel, But reported less. The purpose of this paper is a more comprehensive study of 30CrNi2MoVA high strength low alloy steel by different temperature quenching