Structural and magnetic transition in stainless steel Fe-21Cr-6Ni-9Mn up to 250 GPa |
(a) Variations of c / a ratio of SS 21-6-9 with pressure. The dash and solid lines represent the linear fitting results of our quasi- and non-hydrostatic results, respectively ( c / a = 1.644 − 3.9 × 10−4 P (GPa) (quasi-hydrostatic), c / a = 1.602 − 0.3 × 10−4 P (GPa) (non-hydrostatic)). The results of pure iron determined by Mao et al . ( c / a = 1.604 − 4.9 × 10−5 P (GPa)),[ 21 ] Jephcoat et al . ( c / a = 1.606 − 1.2 × 10−4 P (GPa)),[ 22 ] Uchida et al . ( c / a = 1.613 − 1.6 × 10−6 P (GPa)),[ 16 ] and Ma et al . ( c / a = 1.585+6.3 × 10−5 P (GPa))[ 31 ] are also shown for comparison. (b) The c / a ratio of pure iron determined by Dewaele et al .,[ 22 ] where the dash and solid lines represent the linear fitting results below and above 50 GPa respectively. |