文献类型：期刊文献

英文题名：Applicability of the ASME Exemption Curve for Chinese Pressure Vessel Steel Q345R

作者：Cui, Qingfeng[1];Hui, Hu[1];Li, PeiNing[1]

机构：[1]E China Univ Sci & Technol, Sch Mech Engn, Inst Proc Equipment, Shanghai 200237, Peoples R China

年份：2015

卷号：137

期号：6

外文期刊名：JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME

收录：;EI(收录号：20153501207846);WOS:【SCI-EXPANDED(收录号:WOS:000364402300020)】；

基金：This research was supported by the National High-Tech Research and Development Program (863 Program) of China (No. 2012AA040105) and the Fundamental Research Funds for the Central Universities (No. 222201313014).

语种：英文

外文关键词：Q345R steel; exemption curve; failure assessment diagram (FAD); minimum design metal temperature (MDMT)

摘要：Q345R steel is the most commonly used material in fabrication of the pressure vessels and boilers in China, due to its excellent properties. In 2010, ASME code case 2642 accepted Q345R steel for use in construction of pressure vessels. The code case specified impact test exemption curve A for the impact test requirements for Q345R. However, this provision severely limits the application of this material at low temperature, since most of the minimum design metal temperature (MDMT) of curve A is above the freezing point. In this paper, a series of tests (such as uniaxial tensile test, impact test, and fracture toughness test) were carried out at low temperature to investigate the mechanical properties of Q345R steel plates with thickness of 36-80 mm. This study of low temperature usage of Q345R steel was conducted using the fracture mechanics assessment procedure of API 579-1/ASME FFS-1. The fracture toughness is given by master curve (MC) method in the transition regime. The results show that Q345R can be used at lower temperature and that classifying Q345R steel into curve D is appropriate.