基于3D打印技术的材料热物性调控  

Modulation of Thermophysical Property of 3D Printing Materials

作　　者：孙强胜 薛志祥 徐屾 张俊[1] 岳亚楠[1] SUN Qiangsheng;XUE Zhixiang;XU Shen;ZHANG Jun;YUE Yanan(School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China;School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]武汉大学动力与机械学院,武汉430072 [2]上海工程技术大学机械与汽车工程学院,上海201620

出　　处：《工程热物理学报》2025年第3期967-974,共8页Journal of Engineering Thermophysics

基　　金：国家自然科学基金面上项目(No.52076156)。

摘　　要：本文基于材料结构和物性之间的决定性关系,提出了一种通过3D打印技术产生微结构实现材料热物性调控的方法。实验制备了不同3D打印扫描速度的304L不锈钢材料,通过微观结构特征分析和热物性测量,建立孔隙率、导热系数和扫描速度之间的相关性,并基于实验所得导热系数和扫描速度的非线性关系式k=14.43+4.25 exp(−v/1187.7),对扫描速度为1500 mm/s的新样品导热系数进行预测和实验验证,0.6%的误差说明上述热导率与扫描速度相关性的有效性。此外建立3D打印样品微孔结构二维传热模型,详细研究了孔结构对材料整体热物性的影响。Based on the decisive relationship between material structure and physical properties,a method for regulating thermal properties of materials was proposed by generating microstructures through 3D printing technology.The 304L stainless steel with different 3D printing scanning speeds was prepared,and the correlation between porosity,thermal conductivity and scanning speed was established by microstructure characterization and thermal property measurement,and the nonlinear relationship equation k=14.43+4.25 exp(−v/1187.7)between thermal conductivity and scanning speed was obtained based on the experiment.The prediction and experimental verification of the thermal conductivity of the new sample with a scanning speed of 1500 mm/s and the error of 0.6%indicates the validity of the above correlation between thermal conductivity and scanning speed.In addition,a two-dimensional heat transfer model of the microporous structure of the 3D printed samples was established,and the effect of the pore structure on the overall thermal properties of the material was investigated in detail.

关 键 词：3D打印 热导率调控 智能制造 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]