Porous FeAl alloys via powder sintering: Phase transformation, microstructure and aqueous corrosion behavior

被引：26
作者：
Chen, Gang [1 ]
Liss, Klaus-Dieter [2 ,3 ,4 ]
Chen, Chao [5 ]
He, Yuehui [5 ]
Qu, Xuanhui [5 ]
Cao, Peng [6 ,7 ]
机构：
[1] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Inst Adv Mat & Technol, Beijing 100083, Peoples R China
[2] Guangdong Technion Israel Inst Technol, Mat & Engn Sci Program, Shantou 515063, Guangdong, Peoples R China
[3] Technion Israel Inst Technol, IL-32000 Haifa, Israel
[4] Univ Wollongong, Fac Engn & Informat Sci, Sch Mech Mat Mechatron & Biomed Engn, Wollongong, NSW 2522, Australia
[5] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[6] Univ Auckland, Dept Chem & Mat Engn, Private Bag 92019, Auckland 1142, New Zealand
[7] Victoria Univ Wellington, MacDiarmid Inst Adv Mat & Nanotechnol, POB 600, Wellington 6140, New Zealand
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2021年 / 86卷
基金：
中国国家自然科学基金;
关键词：
Powder sintering; Intermetallic; Porous; Corrosion; Neutron diffraction; IRON ALUMINIDES; NEUTRON-DIFFRACTION; REACTIVE SYNTHESIS; AL; SITU; INTERMETALLICS; DIFFUSION; OXIDATION;
D O I：
10.1016/j.jmst.2021.01.029
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study investigates the phase transformation and microstructure of porous FeAl parts sintered from elemental powder mixtures using in-situ neutron diffraction and in-situ thermal dilatometry. A single B2 structured FeAl phase was determined in the sintered FeAl alloy. The combined effects of the Kirk-endall porosity, transient liquid phase, and phase transformations associated with powder sintering all contribute to the swelling phenomenon of the final sintered part. The aqueous corrosion test indicates that the corrosion products include iron oxides in the porous FeAl parts. The accumulation of corrosion products blocks the pore channel and decreases pore size and permeability over the soaking time. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：64 / 69
页数：6
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