许天旱,冯耀荣,雒设计,王党会,杨宝

• 1:西安石油大学材料科学与工程学院
• 2:中国石油集团石油管工程技术研究院

摘要(Abstract)：

借助TEM、SEM及疲劳试验机等设备,研究了不同显微组织套管钻井钢组织和力学性能之间的关系。试验结果表明:TM钢是由显微硬度显著更高的近完全回火马氏体构成,PF钢则是由显微硬度较低珠光体和铁素体构成,TM钢和PF钢分别具有更高和更低的硬度和强度。PF钢在冲击载荷下主要以解理方式断裂,而FBM钢和TM钢则主要以延性韧窝方式断裂,FBM钢和TM钢的冲击韧性是PF钢的5倍多。不同显微组织决定疲劳裂纹扩展路径和拉伸性能不同,PF钢具有最大的材料常数m值和最小的C值,TM钢则具有最小材料常数m值和最大的C值。

关键词(KeyWords)： 套管钻井用钢;显微组织;拉伸特性;冲击特性;疲劳裂纹扩展速率

Abstract:

Keywords:

基金项目(Foundation): 青年科技创新基金项目(Z12180);; 国家863计划资助项目(2006AA06A107);; 陕西省材料科学与工程重点学科资助项目(ys32030203)

作者(Author): 许天旱,冯耀荣,雒设计,王党会,杨宝

DOI: 10.13289/j.issn.1009-6264.2015.09.009

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