高压气瓶4130X钢低周疲劳特性及疲劳设计曲线探讨  

Discussion on low cycle fatigue characteristics and fatigue design curve of 4130X steel for high pressure gas cylinder

作　　者：赵广洲 鲍文杰 陈凡 曹文红 黄国明 夏明 周昌玉[1] 贺小华[1] ZHAO Guangzhou;BAO Wenjie;CHEN Fan;CAO Wenhong;HUANG Guoming;XIA Ming;ZHOU Changyu;HE Xiaohua(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China;Zhejiang Rein Gas Equipment Co.,Ltd.,Shaoxing 312369,China)

机构地区：[1]南京工业大学机械与动力工程学院,南京211816 [2]浙江蓝能氢能科技股份有限公司,浙江绍兴312369

出　　处：《压力容器》2023年第8期37-43,共7页Pressure Vessel Technology

基　　金：江苏省研究生科研与实践创新计划项目(院级)(JXSS-029)。

摘　　要：针对大容积钢制无缝气瓶材料4130X钢,开展了应变控制下4130X钢的循环特性、应变幅-寿命关系、概率-应变幅-寿命关系和疲劳设计曲线研究,参考ASMEⅧ-2—2021和JB 4732—1995《钢制压力容器——分析设计标准》给出了4130X钢的疲劳设计曲线。获得的4130X钢疲劳设计曲线,与规范中793 MPa≤σ_(uts)≤892 MPa的疲劳设计曲线有一定的差异,略高于ASMEⅧ-Ⅱ(σ_(uts)≤552 MPa)和JB 4732—1995(σ_(uts)≤540 MPa)的疲劳设计曲线。4130X钢材料疲劳寿命设计可采用本文提出的疲劳设计曲线或保守地采用ASMEⅧ-Ⅱ(σ_(uts)≤552 MPa)和JB 4732—1995(σ_(uts)≤540 MPa)中对应材料的疲劳设计曲线。For 4130X steel used for large capacity seamless steel gas cylinders,the cycle characteristics,strain amplitude-life relation,probability-strain amplitude-life relations and fatigue design curve under strain control mode for 4130X steel were studied,and the fatigue design curve was derived according to ASMEⅧ-2—2021 and JB 4732—1995 Steel Pressure Vessels——Design by Analysis.The fatigue design curve of 4130X steel obtained in present study is somehow different from the fatigue design curve with 793 MPa≤σ_(uts)≤892 MPa in the specification,and is a little higher than the fatigue design curve of ASMEⅧ-Ⅱ(σ_(uts)≤552 MPa)and JB 4732—1995(σ_(uts)≤540 MPa).The fatigue life design of 4130X steel can be performed by using the fatigue design curve proposed in present study or the corresponding fatigue design curve of ASMEⅧ-Ⅱ(σ_(uts)≤552 MPa)and JB 4732—1995(σ_(uts)≤540 MPa)codes conservatively.

关 键 词：4130X钢 低周疲劳 应变控制 循环软化 疲劳设计曲线 

分 类 号：TH49[机械工程—机械制造及自动化] TG111.8[金属学及工艺—物理冶金]