Study on the Performance of High-Speed Rail Damage of Four Different Materials

Figure 5

Crack growth of different rail material samples: (a) quenched PD3 rail (1000×); (b) hot-rolled PD3 rail (1000×); (c) quenched U71Mn rail (1000×); (d) hot-rolled U71Mn rail (1000×).

(a)

(b)

(c)

(d)