摘要
The indentation toughness of Mo 5Si 3 based phases was studied with regard to different alloying elements, amount of alloying addition as well as the presence of secondary phases. Cr, Ti, Nb, Ni and Co were added as alloying elements. The results show that the indentation fracture toughness of Mo 5Si 3 increases with the alloying additions, from 2.4?MPa·m 1/2 for monolithic to just over 3?MPa·m 1/2 for highly alloyed Mo 5Si 3. Small volume fractions of brittle secondary phases may have a positive impact on the indentation toughness; while larger fractions seems to lower the toughness.
The indentation toughness of Mo_5Si_3-based phases was studied with regard todifferent alloying elements, amount of alloying addition as well as the presence of secondaryphases. Cr, Ti, Nb, Ni and Co were added as alloying elements. The results show that the indentationfracture toughness of Mo_5Si_3 increases with the alloying additions, from 2.4 MPa centre dotm^(1/2) for monolithic to just over 3 MPa centre dot m^(1/2) for highly alloyed Mo_5Si_3. Smallvolume fractions of brittle secondary phases may have a positive impact on the indentationtoughness; while larger fractions seems to lower the toughness.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2002年第4期676-680,共5页
Transactions of Nonferrous Metals Society of China
基金
Project ( 5 98810 0 4)supportedbytheNationalNaturalScienceofChina
