摘要
采用材料组织分析法以及力学性能测试对不同热处理后V150钻杆材料的组织与性能进行研究。结果表明,热处理可提高V150钻杆材料的抗氢致开裂(HIC)性能;经900℃×90 min+水淬+735℃×120 min+空冷热处理的试样比经过其他热处理及不进行热处理的试样具有更加优异的综合性能。随氢致开裂试验时间延长,V150钻杆材料的抗HIC性能减弱,主要腐蚀产物为Fe和Mn的硫化物。带状组织及夹杂是导致材料发生氢致开裂的主要原因,Cu,Ni等元素可以提高材料的抗HIC性能。
Mierostructure and properties of V150 drill pipe steel after different heat treatments were studied by means of optical microscope （OM） , SEM, EDS analysis and mechanical performance testing. The results show that hydrogen-induced cracking（HIC） resistance of the V150 drill pipe material improves after heat treatment. When the sample is heat-treated at 900 ℃ for 90 min by water quenching and then heat-treated at 735 ℃ for 120 min by air-coolling, the optimum combination of strength and ductility is obtained. The HIC resistance of the V150 drill pipe steel decreases with the increasing time of HIC experiment, the main corrosion products are Fe-sulfide and Mn-sulfide. It is concluded that the banded microstructure and inclusions in the V150 drill pipe steel are the key factors leading to HIC. In addition, Cu and Ni elements can improve HIC resistance of the V150 drill pipe steel.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2016年第7期149-155,共7页
Transactions of Materials and Heat Treatment
基金
石油天然气装备教育部重点实验室开放基金(OGE201402-02)
四川省教育厅重点项目(15ZA0057)
长江师范学院校级青年项目(2015XJXM25)
