赵艳宇, 李国忠, 王福明. Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS[J]. Special Steel, 2009, 30(4): 17-18.
赵艳宇, 李国忠, 王福明. Elevated Temperature Ductility of Cast Bloom of Non-Quenched and Tempered Free Cutting Steel 38MnVS[J]. Special Steel, 2009, 30(4): 17-18.DOI:
Elevated temperature ductility and deformed fracture mechanism of 370 mm×490 mm cast bloom of non- quenched and tempered free cutting steel 38MnVS(%:0.42C
1.29Mn
0.09V
0.067S)have been studied by Gleeble 1500D thermal simulator. Results showed that the Zero Strength Temperature(ZST)and Zero Ductility Temperature (ZDT)of steel 38MnVS were respectively1370 ℃ and1335 ℃;there were two brittle zones for steel 38MnVS in temperature range from melting point Ts to 600 ℃ i.e. brittle zone I-Ts~1250 ℃ and brittle zone Ⅲ 875~600 ℃
therefore the straightening temperature of cast bloom of the steel should be more than 875 ℃.