摘要
The effect of minor boron(1.0%, mole fraction) addition on tensile properties of wrought Ti 47 2Mn 2Nb alloy was investigated within the temperature range from 77 K to 1 373 K and the strain rate range from 10 -5 s -1 to 10 -1 s -1 . It was found that the minor addition of boron effectively refines the nearly lamellar microstructure of the alloy, significantly improves its strength, as well as its ductility. Although to a less degree, below its brittle to ductile transition temperature (T BD ), it does not harm its strength above its T BD , and is therefore proved to be an potentially effective way to improve comprehensive properties of wrought TiAl alloy. The B addition was also found to produce no obvious change in the fracture mode except for the cases around T BD .
The effect of minor boron(1.0%, mole fraction) addition on tensile properties of wrought Ti-47-2Mn-2Nb alloy was investigated within the temperature range from 77 K to 1373 K and the strain rate range from 10(-5) s(-1) to 10(-1) s(-1). It was found that the minor addition of boron effectively refines the nearly lamellar microstructure of the alloy, significantly improves its strength, as well as its ductility. Although to a less degree, below its brittle-to-ductile transition temperature ( T-BD), it does not harm its strength above its T-BD, and is therefore proved to be an potentially effective way to improve comprehensive properties of wrought TiAl alloy. The B addition was also found to produce no obvious change in the fracture mode except for the cases around T-BD.
出处
《中国有色金属学会会刊：英文版》
CSCD
2000年第2期162-166,共5页
Transactions of Nonferrous Metals Society of China
基金
NationalNaturalScienceFoundationofChinaandprojectsupportedbyUniteTechnologies PrattandWhitneyandbyOpenLaboratoryforHigh Tem
