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DP1180钢板高温单向拉伸性能研究

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通过Gleeble-3800热模拟机在500~900 ℃范围内对1.8 mm厚度DP1180钢板进行高温拉伸试验,探究了温度对其力学性能的影响,并分析了不同温度下拉伸失效试样的断口形貌和显微组织.研究结果表明:材料的抗拉强度随着温度的上升显著降低,当拉伸试验温度由500℃上升到900 ℃后,抗拉强度由759 MPa下降至251 MPa;同时延伸率大幅提高,由36.5%提高至71.5%;在此过程中,拉伸试样的断口形貌由包含脆性断裂特征转变为典型的韧性断裂特征.
Study on High-temperature Unidirectional Tensile Properties of DP1180 Sheet
The influence of temperature on the mechanical properties of DP1 180 steel plate with 1.8 mm thickness was investigated by high temperature tensile test of DP1180 steel plate with Gleeble-3800 thermal simulation machine in the range of 500-900 ℃.The fracture morphology and microstructure of tensile failure specimens at different temperatures were analyzed.The results show that the tensile strength of the material decreases significantly with the increase of temperature.When the tensile test temperature rises from 500 ℃ to 900 ℃,the tensile strength decreases from 759 MPa to 251 MPa.At the same time,the elongation rate increased significantly from 36.5%to 71.5%.During this process,the fracture morphology of tensile specimens changed from brittle fracture to typical ductile fracture.

DP1180unidirectional drawingmechanical propertyfracture morphology

徐辉、邓沛然、种习文、杨尚磊

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上海工程技术大学 材料科学与工程学院,上海 201600

DP1180 单向拉伸 力学性能 断口形貌

2024

模具技术
上海交通大学

模具技术

CSTPCD
影响因子:0.219
ISSN:1001-4934
年,卷(期):2024.(2)