超304HCu不锈钢自焊缝接头在沸腾氯化镁溶液中的热拉伸性能及恒载荷应力腐蚀开裂试验数据

Hot tensile properties and constant load stress corrosion cracking test data of autogenous weld joints of super 304HCu stainless steel in boiling MgCl solution.

作者信息

Kumar M Vinoth, Balasubramanian V

机构信息

Department of Mechanical Engineering, Hindustan Institute of Technology and Science, Padur, Chennai, Tamilnadu 603103, India.

Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, Tamilnadu 608002, India.

出版信息

Data Brief. 2018 Mar 7;18:102-110. doi: 10.1016/j.dib.2018.03.002. eCollection 2018 Jun.

DOI:10.1016/j.dib.2018.03.002

PMID:29896498

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5996137/

Abstract

Hot tensile test data of Gas Tungsten Arc Welded (GTAW) autogenous joints of Super 304HCu tubes tested at their operating temperature are presented along with the microstructure of the weld joint. The GTAW joints exhibited lower tensile strength than the parent metal and the failure occurred in the weld metal region for all test temperatures. Constant load Stress Corrosion Cracking (SCC) test data of the GTAW weld joints tested in boiling MgCl environment at different applied stress level are presented. SCC curves obtained from the test were analyzed to derive SCC parameters such as rate of steady state elongation, the time required for set-in of tertiary region, and time to complete fracture. The fracture surfaces of SCC samples were examined using Scanning Electron Microscope to reveal the mode of fracture. Super 304HCu stainless steel being used as construction material for super heaters and reheaters of advanced ultra super critical boilers, this data will be an addition to the design data available for material selection in design of power plants.

摘要

给出了在工作温度下对Super 304HCu管的钨极气体保护焊（GTAW）自熔接头进行热拉伸试验的数据，以及焊接接头的微观结构。GTAW接头的抗拉强度低于母材，并且在所有测试温度下，失效均发生在焊缝金属区域。给出了在沸腾的MgCl环境中不同外加应力水平下对GTAW焊接接头进行恒载应力腐蚀开裂（SCC）试验的数据。对从试验中获得的SCC曲线进行分析，以得出SCC参数，如稳态伸长率、第三阶段开始所需的时间以及完全断裂的时间。使用扫描电子显微镜检查SCC样品的断口表面，以揭示断裂模式。Super 304HCu不锈钢用作先进超超临界锅炉过热器和再热器的建筑材料，这些数据将补充到发电厂设计中材料选择可用的设计数据中。