烧结温度对Inconel 625多孔材料孔结构和拉伸性能的影响  

Effect of Sintered Temperature on the Pore Structure and Tensile Properties of Porous Inconel 625 Materials

作　　者：李广忠[1] 李亚宁[1] 许忠国[1] LI Guangzhong;LI Yaning;XU Zhongguo(State Key Laboratory of Porous Metal Materials,Northwest Institute for Nonferrous Metal Research,Xi'an 710016,China)

机构地区：[1]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016

出　　处：《铸造技术》2025年第3期224-231,共8页Foundry Technology

基　　金：陕西省财政厅功能材料专项(0601YC2307)。

摘　　要：采用粉末烧结工艺制备Inconel 625多孔材料,分析了Inconel 625多孔材料的典型孔隙特征并进行3D-CT建模表征,研究不同烧结温度对Inconel 625多孔材料的性能,如形貌、孔隙率、最大孔径和透气度等的影响。结果表明,随着烧结温度的升高,抗拉强度逐渐提高,当烧结温度为1250℃时,Inconel 625多孔材料抗拉强度可达224 MPa。高温拉伸结果显示,Inconel 625多孔材料的高温拉伸强度随测试温度的升高而降低,而塑性则随测试温度升高而提高。The preparation of an Inconel 625 porous material via powder sintering was studied.The typical pore characteristics of the Inconel 625 porous material were analysed and characterized through 3D-CT modelling.The effects of different sintering temperatures on the properties of the Inconel 625 porous material,such as morphology,porosity,maximum pore diameter,and air permeability,were studied.The tensile test results at room temperature reveal that the tensile strength gradually increases with increasing sintering temperature.When the sintering temperature is 1250℃,the tensile strength of the Inconel 625 porous material reaches 224 MPa.The high-temperature tensile results of the Inconel 625 porous material indicate that with increasing test temperature,the tensile strength decreases,whereas the plasticity increases.

关 键 词：发汗冷却 Inconel 625 烧结 多孔材料 高温强度 

分 类 号：TG146.15[一般工业技术—材料科学与工程] TF125[金属学及工艺—金属材料]