淬火温度对石油套管原始奥氏体晶粒和力学性能的影响  

Effects of Quenching Temperature on Prior Austenitic Grain and Mechanical Properties of Petroleum Casing

作　　者：陈红研 曹灵翼 马旻昊 王云开 CHEN Hongyan;CAO Lingyi;MA Minhao;WANG Yunkai(State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110000,China)

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110000

出　　处：《热加工工艺》2023年第18期99-102,共4页Hot Working Technology

基　　金：国家级大学生创新创业训练计划资助项目(201910145258);中央高校基本科研业务专项资金资助项目(N182410001)。

摘　　要：在石油开采过程中,石油套管的消耗量巨大,目前国内外的研究成果止步于V150级别。以开发V170级别为目标,设计了新型合金成分。检测不同淬火温度下石油套管中原始奥氏体晶粒的尺寸和最终所得的综合性能,研究新成分体系下淬火温度对V170级石油套管的原奥氏体晶粒尺寸及其力学性能的影响。结果表明:随着淬火温度从920℃降低至820℃,原奥氏体晶粒尺寸由39.22μm降至10μm,而后保持不变。试验钢保持强度不变的前提下,冲击韧性和伸长率逐渐提高。本研究获得的最佳淬火温度为820℃或840℃。In the process of oil exploitation,the consumption of oil casing is largest.At present,the domestic and abroad research results stop at the V150 level.New alloy components were designed with the goal of developing the V170 level.The size and the final comprehensive performance of the prior austenite grain in the oil sleeve at different quenching temperatures were detected,and the influence of the quenching temperature on the size of the prior austenitic grains and its mechanical properties under the new component system was studied.The results show that as the quenching temperature decreases from 920℃to 820℃,the prior austenite grain size decreases from 39.22μm to 10μm,and then remains unchanged.The experimental steel remains unchanged and the impact toughness and elongation are gradually improved.The optimal quenching temperature obtained in this study is 820℃or 840℃.

关 键 词：淬火温度 原奥氏体 石油套管 屈服强度 

分 类 号：TG161[金属学及工艺—热处理] TG142.4[金属学及工艺—金属学]