PSI - Issue 21

Serhat Onur Çakmak et al. / Procedia Structural Integrity 21 (2019) 224–232 Serhat Onur C¸ akmak, Tuncay Yalc¸inkay / Structural In egrity Procedia 00 (2019) 000–000

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7

(Avg: 75%) S, Mises

100.00 275.00 450.00 625.00 800.00 975.00 1150.00 1325.00 1500.00 1675.00 1850.00 2025.00 2200.00 3676.00

(a)

(b)

(c)

(d)

(Avg: 75%) S, Mises

100.00 275.00 450.00 625.00 800.00 975.00 1150.00 1325.00 1500.00 1675.00 1850.00 2025.00 2200.00 3306.92

(e)

(f)

(g)

(h)

Fig. 5: Von Mises stress distribution for di ff erent orientation sets and volume fraction (a-d) orientation set1, (e-h) orientation set2 and (a,e) VF15, (b,f) VF19, (c,g) VF28, (d,h) VF37.

700

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300

400

300

200 Stress[MPa]

Stress[MPa]

200

100

0 Strain VF37−Morph1−OriSet1 VF37−Morph1−OriSet2 Fig. 6: Engineering stress-strain response of VF15 (left) and VF37 (right) for di ff erent initial ferrite orientation distri butions. 0 0.05 0.1 Strain VF15−Morph1−OriSet1 VF15−Morph1−OriSet2 0.15 0.2 0 100 0 0.05 0.1 0.15

for low martensite content cases, the di ff erence in the formation of shear band like localization is also visible in these samples. Comparison of the localization in VF15 and VF19 presented in (a,e) and (b,f)) reveals this di ff erence. For