摘要
利用电子显微术分析了喷射沉积Ni3Al-Mo合金的显微组织.结果表明：合金具有细小的晶粒组织（10－40μm），局部区域有显微疏松；基体合金的主要组成相为γ'和γ;在γ相内存在Ni2MO，Ni3Mo及一种富Ni新相.该新相具有面心立方结构，晶格常数α－1.09nm。
By optical metallography, XRD, DTA, SEM, TEM, HREM and computersimulation the microstructure of Ni3Al-Mo alloy prepared by spray atomization deposition isexamined and studied in detail. The microstructure of preform consists of uniform equiaxialgrains, with the size range of 10-40 μm, there also exists microporosity. Except the mainphases of matrix alloy, γ' and γ, there exist minor Ni2Mo, Ni3Mo phases found to be withinthe γ network. A new phase enriched in Ni in the γ phase has been identified to have fee structure with lattice constant a=1 .09nm, and space group Fm3m.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第6期566-572,共7页
Acta Metallurgica Sinica
基金
国家自然科学基金!59431032
哈尔滨工业大学精密热加工国防科技重点实验室资助
关键词
喷射沉积
显微组织
镍基合金
粉末
spray atomization co-deposition, Ni_3Al-Mo superalloy, microstructure
