Equation of state of the alpha and epsilon phases of iron

A model for the shock-induced phase transition in iron

“…This result differs from previous models, in that Andrews [3] measured A, -X at constant V and U , Horie and Duvall [18] measured A, -X at constant V and T , and both used the equilibrium value of X in place of A, .…”

“…5 , rat her than the equilibrium surface used in previous models [3,18]. To answer this import ant question, we have repeated our calculations for experiment 1 of Barker and Hollenbach [5] with A , in Eq.…”

“…Finally, the thermal electronic contribution is expressed as the sum of two parts, a normal conduction-electron contribution (Fcond; approximated with its low-temperature form) and a contribution due to the magnetic ground state of cy iron ( F m a g ; obtained from Andrews' fit to the magnetic specific heat of cy iron [3]). The analytical EOSs used here for the CY and E phases provide a good fit to the experimental CY-E phase boundary of iron [lo-121 and the 300 K isotherm measured by Mao e t aZ [13,14].…”

Isentropic compression experiments on the Sandia Z accelerator

“…Hayes has modified a one-dimensional wave propagation code ͑WONDY͒ to include the effects of kinetics in phase transformations. The model used employs ␣ and ⑀ equations of state from Andrews 16 and the pressure and temperature at each time and position are advanced using the finite difference form of the equations in ͑6͒,…”

AM363 martensitic stainless steel: A multiphase equation of state

“…3 should be volume independent. Fitted to experimental data [10], the parameters were reported as a 2 = 1135 K and a 3 b = 4680 J/mol. Following these directions, the iron thermal electronic contribution, initially evaluated with the TFD model, was then modified by adding the magnetic term to the free energy (see Fig.…”