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Vol.48, No.3, 210 ~ 218, 2010
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| Title |
| Effects of Onset Time of Fatigue and Cooling Rate on Hot Ductility of Plain Carbon Steel |
| 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 |
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| 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. |
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| Key Words |
| metals, thermomechanical processing, fatigue, tensile test, hot ductility |
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