Symmetry Breakdown Related Fracture in 42CrMo4 Steel
Abstract
:1. Introduction
2. Materials and Methods
3. Results
4. Discussion
- A.
- The crack through the fractured subunits (i.e., blocks or laths) obeys elastic-plastic fracture mechanics (EPFM) and has a plastic zone upon the plane-strain condition;
- B.
- The inter-subunit fracture is insignificant after austempering below the martensite start temperature (ABMS);
- C.
- The radius of the selected integration contour for the path-dependent J-integral is quantized by the average effective path of the crack propagating through individual subunits;
- D.
- A uniform distribution of the crystallographic symmetry of grains is assumed.
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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C | Si | Mn | S | P | Cr | Mo | Fe | fRA | deff1 | κ2 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|
w.a. | w.l. | w.a. | w.l. | |||||||||
0.40 | 0.35 | 0.82 | 0.018 | 0.007 | 0.90 | 0.11 | Bal. | 0 | 2.5 | 0.9 | 0.4 | 0.4 |
Symbol | Component | Type | Shear 1 |
---|---|---|---|
J1 | (0–11) [–211] | S/T | 0.11–0.58 |
J2 | (1–10) [–1–12] | S/T | 0.11–0.58 |
D1 | (11–2) [111] | S/T | 0.07–0.29 |
D2 | (−1–12) [111] | S/T | 0.94 |
E1 | (01–1) [111] | S/T | 0.09–0.81 |
E2 | (0–11) [111] | S/T | 0.09–0.81 |
F | (110) [001] | S/T | 0.05–0.09 |
Cα | (110) [1–10] | T | 0.58 |
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Feng, J.; Barth, S.; Wettlaufer, M. Symmetry Breakdown Related Fracture in 42CrMo4 Steel. Metals 2021, 11, 344. https://doi.org/10.3390/met11020344
Feng J, Barth S, Wettlaufer M. Symmetry Breakdown Related Fracture in 42CrMo4 Steel. Metals. 2021; 11(2):344. https://doi.org/10.3390/met11020344
Chicago/Turabian StyleFeng, Jian, Stefan Barth, and Marc Wettlaufer. 2021. "Symmetry Breakdown Related Fracture in 42CrMo4 Steel" Metals 11, no. 2: 344. https://doi.org/10.3390/met11020344