@Article{ Knipling-2004-2821,
  author = "Knipling, K.E. and Zeman, G. and Marte, J.S. and Kelly, S.M. and Kampe, S.L.",
  title = "Effect of Dissolved Tungsten on the Deformation of 70Ni-30Fe Alloys",
  journal = "Metallurgical and Materials Transactions A",
  year= "2004",
  volume = "35A",
  number = "9",
  pages = "2821--2828",
  abstract = "A series of Ni-Fe alloys containing various levels of tungsten in solid solution have been prepared as a means to assess the influence of solid solution strengthening on the mechanical behavior of monolithic 70Ni-30Fe. In particular, 70Ni-30Fe alloys plus equilibrium concentrations of tungsten in solid solution nominally correspond to the compositions associated with the matrix-only portion of certain tungsten heavy alloys, that is, alloys comprised of a high volume fraction of nominally pure tungsten particles embedded within a minority Ni-Fe-W based matrix. The study shows that the working solubility of tungsten within the 70Ni-30Fe base composition increases slightly with temperature, from approximately 21 wt pct at room temperature to approximately 23 wt pct at 1400$^\circ$C. Increasing the level of tungsten in solid solution leads to increases in room-temperature yield strength, tensile strength, and ductility. In contrast, the deformation characteristics of the alloys, as quantified by the power-law work-hardening exponent, $n$, and the strain-rate-sensitivity exponent, $m$, show little variation with tungsten solute concentration.",
  doi = "10.1007/s11661-004-0229-y"
}