烧结温度对多孔Inconel 625合金性能的影响  

Effect of Sintering Temperature on Properties of Porous Inconel 625 Alloy

作　　者：王昊 荆鹏[1] 李广忠[1] Wang Hao;Jing Peng;Li Guangzhong(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：《稀有金属材料与工程》2021年第10期3693-3697,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金重点国际(地区)合作与交流项目(52020105011)。

摘　　要：本研究旨在研发出耐蚀性良好的过滤材料,利用粉末冶金技术制备了兼具Inconel 625合金本身特性与功能特性的多孔Inconel 625合金。采用粒度100~200μm的合金粉末,通过模压-气氛烧结工艺制备出多孔Inconel 625合金,并对不同烧结温度下的合金进行形貌表征与性能评价。结果表明,在1240℃烧结温度下合金烧结颈发育良好,孔隙球化率高,此时透气度满足服役性能需求,可作为高温气液过滤材料使用。该烧结温度下合金剪切性能达到最优,最大抗剪切力为51.0 kN,也为后续进一步的研究提供了参考依据。Inconel 625 alloy has excellent corrosion resistance and high temperature mechanical properties,which is widely used in aerospace,petrochemical,nuclear industry,etc.Porous materials are widely used as filter materials because of their light weight and excellent permeability.The purpose of this paper is to prepare a filter material with good corrosion resistance.Porous Inconel 625 alloy with its own characteristics and functionality was prepared by molding-atmosphere sintering process with 100~200μm alloy powder.The morphologies and properties of the alloy at different sintering temperatures were characterized and evaluated.The results show that the sintered neck is well developed and the degree of pore spheroidization is high at the sintering temperature of 1240℃.At this time,the air permeability can satisfy the requirements of service performance,and can be used as high temperature gas-liquid filter material.At 1240℃,the shear performance of the alloy reaches the best,and the maximum shear force is 51.0 kN,which also provides a reference for further research.

关 键 词：多孔材料 Inconel 625合金 烧结温度 力学性能 

分 类 号：TF125.212[冶金工程—粉末冶金] TB383[冶金工程—冶金物理化学]