| Title |
Effects of Onset Time of Fatigue and Cooling Rate on Hot Ductility of Plain Carbon Steel |
| Authors |
박태은(Tae Eun Park); 이운해(Un Hae Lee); 손광석(Kwang Suk Son); 이성근(Sung Keun Lee); 김인수(In Soo Kim); 임창희(Chang Hee Yim); 김동규(Dong Gyu Kim) |
| DOI |
https://doi.org/10.3365/KJMM.2010.48.03.210 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
metals; thermomechanical processing; fatigue; tensile test; hot ductility |
| Abstract |
The effects of cooling rate and onset time of fatigue test on hot ductility of plain carbon steels containing 0.06~0.8 wt.% carbon were investigated at various temperatures. The tensile tested specimen after fatigue strain during cooling showed higher hot ductility than the specimen fatigued and tensile-strained after cooling. With a decreasing cooling rate from solutionizing temperature to test temperature, hot ductility was increased in all temperature ranges, typically in the trough region, and the minimum point of ductility moved to a lower temperature. Also, the depth and width of the trough decreased with lowering the cooling rate. |