Table 2 Summary of fatigue test data.

From: A novel post-weld treatment using nanostructured metallic multilayer for superior fatigue strength

Category of specimen

Number of specimen

Number of run-outs

Slope k of S–N curve assessed according to DIN 5010050

Modified slope k according to DIN 5010050

As-welded

32

3

2.57

3

HiFIT

20

2

3.46

5

Polished

11

4

3.2

3

NMM

16

4

6.79

6

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