Abstract
Fatigue tests about cracks perpendicular to the bimetallic laminates interface were carried out. The laminates were composed of the materials with same elastic modulus and different yield strengths. The influence of strength mismatch, grain size, deformation strengthen, interface debonding and independent plastic zone on the crack propagation was investigated. The propagation procedure and mechanism of fatigue crack normal to the interface of bimetallic laminates with strength mismatch were also discussed. The results showed that material plasticity mismatch either promoted the crack growth as crack advanced to the interface from higher strength material side or retarded it as crack grew to the interface from lower strength material side. However, the cracks were always subjected to the interface shielding because of the existence of interfacial zone.
| Original language | English |
|---|---|
| Pages (from-to) | 73-78 |
| Number of pages | 6 |
| Journal | Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research |
| Volume | 20 |
| Issue number | 1 |
| State | Published - Feb 2006 |
Keywords
- Bimetallic laminate
- Fatigue crack growth
- Foundational discipline in materials science
- Plastic mismatch
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