Abstract
The superplastic behavior of an ultrahigh carbon steel containing 6.7%Al-1.5%Cr-1.4%C subjected to a thermomechanical treatment was studied. Microstructures of the alloys were examined using optical and scanning electron microscopies. Stress exponent (n) was determined using Strain-rate-change-tests and monotonic tensile tests to failure were carried out at different strain rates. The coarse as cast microstructure of the alloy was strongly refined by the thermomechanical process. The processed material consists of fine spheroidized carbides in a ferritic matrix with a grain size of about 2 μm. Elongation to failure up to about 800% with a n value of 2 were obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 93-95 |
| Number of pages | 3 |
| Journal | ISIJ International |
| Volume | 37 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1997 |
| Externally published | Yes |