Thermal Activation Analyses of Dynamic FractureToughness of High Strength Low Alloy Steels

Thermal Activation Analyses of Dynamic Fracture Toughness of High Strength Low Alloy Steels

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摘要 A formula is derived for determining the influence of temperature and loading rate on dynamic fracture toughness of a high strength low alloy steel (HQ785C) from thermal activation analysis of the experimental results of three-point bend specimens as well as introducing an Arrhenius formula. It is shown that the results obtained by the given formula are in good agreement with the experimental ones in the thermal activation region. The present method is also valuable to describe the relationship between dynamic fracture toughness and temperature and loading rate of other high strength low alloy steels. A formula is derived for determining the influence of temperature and loading rate on dynamic fracture toughness of a high strength low alloy steel (HQ785C) from thermal activation analysis of the experimental results of three-point bend specimens as well as introducing an Arrhenius formula. It is shown that the results obtained by the given formula are in good agreement with the experimental ones in the thermal activation region. The present method is also valuable to describe the relationship between dynamic fracture toughness and temperature and loading rate of other high strength low alloy steels.

作者 Cunjian LI and Shaohua LI Welding Research Department, Central Iron & Steel Research Institute, Beijing 100081, China Yuqing DENG State Administration of Metallurgical Industry, Beijing 100711, China

出处《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2001年第2期215-218,共4页 材料科学技术（英文版）

关键词 TEST GB Thermal Activation Analyses of Dynamic FractureToughness of High Strength Low Alloy Steels

分类号 TG13 [一般工业技术—材料科学与工程]

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Journal of Materials Science & Technology

2001年第2期

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Thermal Activation Analyses of Dynamic FractureToughness of High Strength Low Alloy Steels

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