The effects of thermo-mechanical control process on microstructures and mechanical properties of a commercial pipeline steel
The effects of thermo-mechanical control process on microstructures and mechanical properties of a commercial pipeline steel
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DOI：
10.1016/s0921-5093(01)01904-9
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发表时间：
2002-09-25
期刊：
影响因子：
6.4
通讯作者：
Shan, YY
中科院分区：
文献类型：
--
作者：
Zhao, MC;Yang, K;Shan, YY
研究了热机械控制工艺(TMCP)对工业管线钢组织和力学性能的影响。通过对试验结果的分析，得到了描述工艺参数与力学性能关系的回归方程：屈服强度(YS)=0.508T(S)-0.23IT(F)-0.334T(C)+1.905V(C)+323.6，EL(伸长率)=-0.002T(s)-0.064T(f)-0.086T(c)+0.325V(c)+121.8，，其中T-S为开轧温度，T-f为终轧温度，T-c为终冷温度(℃)。V-c为冷却速度(摄氏温度S(-1))。给出了获得较好力学性能的TMCP工艺参数：T-S约为1100℃，T-f约为890℃，T-c约为520℃，V-c约为30°C S(-1)。结果表明，优化的TMCP获得的针状铁素体组织具有最佳的力学性能，针状铁素体的组织特征对提高管线钢的强度和韧性具有重要作用。(C)2002 Elsevier Science B.V.保留所有权利。
The thermo-mechanical control process (TMCP) was investigated for its effect on microstructures and mechanical properties of a commercial pipeline steel. Regression equations describing the relationship between processing parameters and mechanical properties were obtained through analyses of the experimental results: yield strength (YS)=0.508T(s)-0.23IT(f)-0.334T(c)+ 1.905V(c) +323.6, EL (elongation)= -0.002T(s)-0.064T(f)-0.086T(c)+0.325V(c)+121.8, where T-s, T-f and T-c are the start rolling, final rolling and final cooling temperature (degreesC), respectively, and V-c is the cooling rate (degreesC s(-1)). The processing parameters of TMCP for obtaining better mechanical properties were given, i.e. T-s is approximately 1100 degreesC, T-f 890 degreesC, T-c 520 degreesC and V-c 30 degreesC s(-1). It was found that the acicular ferrite dominated microstructure obtained by the optimized TMCP has optimum mechanical properties, and the microstructural characteristics of acicular ferrite play important roles in enhancement of both strength and toughness of pipeline steels. (C) 2002 Elsevier Science B.V. All rights reserved.