检索结果-南通市图书馆

SCC of X70 and Its Deteriorated Microstructure in Simulated Acid Soil Environment

Journal of Materials Science & Technology 2009年第2期25卷 169-174页

作者： Zhiyong Liu Guoli Zhai Xiaogang Li Cuiwei Du Corrosion and Protection Center University of Science and Technology Beijing Beijing 100083 China

In order to study the stress corrosion cracking （SCC） of X70 pipeline steel and its weld joint in acid soil environment of southeast of China, two simulating methods were used here. The one was to obtain the bad microstructures in heat affected zone by annealing at 1300℃ for 10 min and air cooling to room temperature, the other was to get a series of simulating solutions of the acid soil environment. SCC susceptibilities of X70 pipeline steels＇before and after being normalized in the simulated solutions were studied by slow strain rate test （SSRT） and microstructural observation of fracture areas. Potentiodynamic polarization curves were used to study the electrochemical behaviour of different microstructures. SCC does occur to both the as-received material and normalized microstructure after heat treatment as the polarization potential decreased. Hydrogen embrittlement （HE） is indicated occurring to all tested materials at -850 mV （vs SCE） and -1200 mV（vs SCE）. The SCC mechanisms are different within varying potential range. Anodic dissolution is the key cause as polarization potential higher than null current potential, and HE will play a more important role as polarization potential lower than the null current potential.

关键词： X70 steel heat affect zone Stress corrosion cracking (SCC) Yingtan soil

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study of fatigue properties for weld HAZ of EH36MOD steel

引用

China Welding 1996年第1期5卷 71-80页

作者： CAI Hongneng CHAO Tanhua ZHOU lixia YANG Yongxing and FEI Decai(Prof CAI Hongneng, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an. 710049. FEI Decai.Binglun Group Yantai, 264000.)

The effect of welding thermal cycle and restraint strain on fatigue properties of cosrse grain region in HAZ of EH36MOD material was studied by thermal simulation technique. The *** that Masing characteristics in the welding coarse grain region of experimental material aPPearly, and the computed values according to the established hysteresis loop energy formula agree well the experimental value'st in the low cycle fatigue test with 0.5 percent constant strain amplitude, the tested material displays faint cyclic softening phenomenon under the condition of two thermal Cycles and different restraint *** wedlding restraint strain imProves foly Cyclic .fatigue life of the coarse grain region at t8/5=6s. it lows that at t8/5=50s.

关键词： fatigue service life heat affect zone thermal cycle EH36MOD steel

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：