定向多孔GH3536制备及其力学性能  

Preparation and Mechanical Properties of Oriented Porous GH3536

作　　者：赵洪炯 鲁中良[1,2] 曹继伟 徐文梁[1] 李涤尘 Zhao Hongjiong;Lu Zhonglinag;Cao Jiwei;Xu Wenliang;Li Dichen(State Key Laboratory for Manufacturing System Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Co-Innovation Center for Advanced Aero-Engine,Beijing 100191,China)

机构地区：[1]西安交通大学机械制造系统工程国家重点实验室,陕西西安710049 [2]先进航空发动机协同创新中心,北京100191

出　　处：《稀有金属材料与工程》2020年第5期1694-1700,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51775418);广东省科技项目(2017B090911006)。

摘　　要：以GH3536高温合金粉末为原料,通过添加稳定剂制得稳定的浆料,采用定向冷冻成形制备了定向多孔高温合金。结果表明:添加0.4%~1%(质量分数)的瓜尔豆胶或者1%~3%的羧甲基纤维素钠作为稳定剂可制备稳定的浆料;随着浆料固相含量从10 vol%增加到30 vol%,定向孔径从308μm减小到198μm,壁厚从81μm增加到223μm,其轴向抗压缩强度从10.72 MPa增加到75.02 MPa,径向抗压缩强度从9.2 MPa增加到78.49 MPa;采用固相含量10 vol%~30 vol%的浆料制备的定向多孔高温合金是一种塑性材料,固相含量越高其吸能能力越好。Oriented porous superalloy was prepared by freeze-casting with GH3536 powder as raw material and guar gum/CMC-Na as stabilizers.The results show that slurries could be stabilized by adding 0.4wt%~1wt%of guar gum or 1wt%~3wt%of sodium carboxymethylcellulose;as the solid loading increases from 10vol%to 30vol%,the width of oriented pore decreases from 308 to 198μm and the wall thickness increases from 81 to 223μm,with the axial and radial compressive strength improving from 10.72 and 9.2 MPa to 75.02 and 78.49 MPa,respectively.The fabricated oriented porous superalloy is a plastic material with the ability of absorbing energy.

关 键 词：定向多孔材料 镍基高温合金 材料制备 力学性能 

分 类 号：TB383[一般工业技术—材料科学与工程]