Figure 7. X-ray diffraction phase analysis of 42CrMo4 steel; (a) phase composition after annealing and  upsetting; (b) quantitative microstructure phase analysis of an approximately 44 peak in the [110]  plane; samples: 0—as-received; 1_a and 2_a—annealed; and 0_u, 1_u, and 2_u—upsetting; XRD.