刘守显, 罗海文, 雍岐龙, et al. Effect of Controlled Rolling and Cooling Process on Structure and Properties of X100 Pipeline Steel[J]. Special Steel, 2007, 28(5): 25-27.
刘守显, 罗海文, 雍岐龙, et al. Effect of Controlled Rolling and Cooling Process on Structure and Properties of X100 Pipeline Steel[J]. Special Steel, 2007, 28(5): 25-27.DOI:
通过实验室φ350 mm 4辊轧机对V-Nb-Wi微合金化X100管线钢(%:0.057C、1.84Mn、0.25Mo)进行控轧控冷试验。结果表明
在1 100℃始轧
800~900℃终轧
100~400℃终冷温度下
X100钢的组织为针状铁素体+粒状贝氏体-下贝氏体。降低终轧温度可细化组织
提高钢的强度;降低终冷温度可提高钢的强度
但使钢的韧性降低。X100管线钢的最佳轧制工艺为终轧温度850℃
终冷温度200℃。
Abstract
The controlled rolling and cooling test for a V-Nb-Ti microalloying X100 pipeline steel(0.057C
1.84Mn
0.25Mo) has been caried out by φ350 mm 4 roll mill in laboratory.Results showed that with initial rolling temperature 1100 ℃
finishing temperature 800~900 ℃ and end cooling temperature 100~400 ℃ the structure of X100 steel was acicular ferrite + granular bainite-lower bainite; and with decreasing finishing temperature
the structure fined and strength of steel increased
with decreasing end cooling temperature the strength increased but the toughness of steel decreased. The optimum hot rolling process for X100 pipeline steel is finishing temperature 850 ℃ with end cooling temperature 200 ℃.