Prediction method for dynamic tearing ductile-brittle transition temperature of high-strength steel

• Main Authors: GAO ZHENPENG, CHENG YINGJIN, GONG XUHUI, NIU JIAJIA
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention provides a method for predicting the dynamic tearing ductile-brittle transition temperature of high-strength steel, which comprises the following steps of: 1, determining the correlation between impact absorption energy and dynamic tearing energy by analyzing test data of high-strength structural steel with different strength grades in an impact test and dynamic tearing; 2, according to the correlation between the impact absorption energy and the dynamic tearing energy, analyzing the correlation between the impact ductile-brittle transition temperature and the dynamic tearing ductile-brittle transition temperature; and 3, according to the correlation between the impact ductile-brittle transition temperature and the dynamic tear ductile-brittle transition temperature and the influence factors of the ductile-brittle transition temperature, obtaining a prediction model of the dynamic tear ductile-brittle transition temperature. According to the calculation model of the dynamic tearing ductile-britt