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. 2019 Mar 8;12(5):809. doi: 10.3390/ma12050809

Figure 10.

Figure 10

(a) SLM laser tracks having stress-induced martensite due to high thermal stresses; (b) formation of fine austenite sub-grains along SLM build direction [42]; (c) AFM image showing fine internally twinned martensitic structure; (d) AFM image showing ultrafine austenite sub-grains [1].