高压储氢容器用高强度可焊接钢板Q690DR的研发  

Research and development of high strength weldable steel plate Q690DRfor high pressure hydrogen storage pressure vessels

作　　者：李双权 梁峰[2] 崔强 杨丽 Li Shuangquan;Liang Feng;Cui Qiang;Yang Li(SINOPEC Guangzhou Engineering Co.,Ltd.,Guangzhou,Guangdong 510620;SINOPEC Qingdao LNG Co.,Ltd.,Qingdao,Shandong 266500;Nangang Research Institute,Nanjing Iron and Steel Co.,Ltd.,Nanjing,Jiangsu 210035;Material Digital R&D Center,China Iron&Steel Research Institute Group,Beijing 100081)

机构地区：[1]中石化广州工程有限公司,广东省广州市510620 [2]中国石化青岛炼油化工有限责任公司,山东省青岛市266500 [3]南京钢铁股份有限公司南钢研究院,江苏省南京市210035 [4]中国钢研科技集团有限公司数字化研发中心,北京市100081

出　　处：《炼油技术与工程》2024年第7期27-32,共6页Petroleum Refinery Engineering

基　　金：国家重点研发计划资助项目(2022YFB4003000);中国石油化工股份有限公司项目(321126)。

摘　　要：以ASME SA517 Gr.F为对标材料,设计高压储氢压力容器用可焊接高强度钢板Q690DR。通过优化化学成分、热处理工艺精准调控,可获得屈服强度不小于690 MPa,抗拉强度800~900 MPa,冲击性能良好的高强度可焊接Q690DR钢板。经系列抗氢性能评价试验,Q690DR具有良好的抗氢脆性能,较低的氢脆敏感性。对比10 MPa氢气与同压力的氮气环境下的慢拉伸试验结果,Q690DR的相对延伸率约为96.4%,相对断面收缩率约为97.0%,具有较低的氢脆敏感性。10 MPa氢气环境下Q690DR测得的断裂韧度K_(IH)约为305 MPa·m^(0.5)。整体看,工业试制的Q690DR钢板各项指标性能优良稳定,符合相关标准及用户技术条件,可以用于实际工程项目高压储氢容器的建造。Design weldable high-strength steel plate Q690DR for high-pressure hydrogen storage pressure vessels using ASME SA517 Gr.F as the reference material.By optimizing chemical composition and precise control of heat treatment process,high-strength weldable Q690DR steel plate with yield strength not less than 690 MPa,tensile strength of from 800 to 900 MPa,and good impact performance can be obtained.After a series of hydrogen resistance performance evaluation tests,Q690DR has good hydrogen embrittlement resistance and lower hydrogen embrittlement sensitivity.Comparing the slow strain rate tensile test results of Q690DR steels under hydrogen gas and nitrogen gas at the same 10 MPa pressure environment,the relative elongation is about 96.4%,and the relative reduction of area is about 97.0%.It indicates that Q690DR has a lower sensitivity to hydrogen embrittlement.The fracture toughness K_(IH)measured by Q690DR in a 10 MPa hydrogen environment is approximately 305 MPa·m^(0.5).Overall,the industrial trial produced Q690DR steel plate has excellent properties and stable performance,meets relevant standards and user technical conditions,and can be used for the construction of high-pressure hydrogen storage containers in practical engineering projects.

关 键 词：压力容器 可焊接高强钢 氢脆敏感性 裂纹扩展速率 断裂韧度 

分 类 号：TK91[动力工程及工程热物理] TG142.1[一般工业技术—材料科学与工程]