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. 2020 Jul 13;13(14):3126. doi: 10.3390/ma13143126

Figure 1.

Figure 1

Experimental results for Cu and 50CrMo4: (a) indentation cycle at 50 N for 50CrMo4; (b) stress–strain from fatigue experiments of 50CrMo4; (c) indentation cycle at 10 N for Cu (d) Stress–strain from fatigue experiments of Cu.