| Abstract Scope |
Decades of efforts in high-strength alloy investigations has well documented the significant role of strain-induced martensitic transformation in mechanical performance advancement (namely, the transformation induced plasticity effect, TRIP). Albeit TRIP-assisted alloys benefit from stress delocalization and thereby deformation homogenization resulting from the transformation, the resultant product, martensite, is yet problematic: its extensive defects density and hardenability discrepancy with the adjacent austenite can lead to local embrittlement and hence fracture. Here in this talk, new findings in three high entropy alloys (HEA), which are Ti-, Fe- and Co-based, will be presented and discussed. The investigations of these multi-phase alloys demonstrate that unexpected mechanical property benefits can be achieved upon pushing the limits of phase stability in HEAs. |