Microstructure Characteristics and Mechanical Properties of Nb-Mo and Nb Micro-Alloying Hot-Rolled X100 Pipeline Steels
ZHOU Ping1,2,DU Lin-xiu1,ZHOU Min1,LIU Xiang-hua1
1. The State Key Lab of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China 2. Technical Research and Development Center, Laiwu Steel Group, Laiwu 271104, Shandong, China
Abstract：Microstructure characteristics and mechanical properties of Nb-Mo and Nb micro-alloying X100 pipeline steels in a different processing were investigated by means of experimental mill, optical microssope (OM) and transmission electron microscopy (TEM) and universal tensile testing machine and impact testing machine. The results show that it is more obviously for the Nb-Mo alloying steel affected by processing parameters. The mechanical properties of the Nb-Mo and Nb micro-alloying steel in controlled rolling and controlled cooling is up to the standard of API 5L, while the mechanical properties of the Nb-Mo alloying steel is better. With increasing cooling rate and decreasing finished cooling temperature, the strength is enhanced, while the plasticity and toughness is deteriorated. Comparing with the steel with lathed martensite, the plasticity and low temperature toughness of the tested steel with dual phase of lath martensite and bainite is increased.
收稿日期: 2011-05-23
出版日期: 2012-10-17
引用本文:
组织特征及力学行为周平,，杜林秀，周民，刘相华. 热轧条件下Nb-Mo及Nb微合金化X100管线钢的[J]. 钢铁, 2012, 47(9): 63-67.
ZHOU Ping1,2,DU Lin-xiu1,ZHOU Min1,LIU Xiang-hua1. Microstructure Characteristics and Mechanical Properties of Nb-Mo and Nb Micro-Alloying Hot-Rolled X100 Pipeline Steels. Iron and Steel, 2012, 47(9): 63-67.
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