燕山大学学报2011，Vol.35Issue(6)：481-487,7.DOI:10.3969/j.issn.1007-791X.2011.06.003
单轴反向加载对管线钢强度性能的影响规律研究
Study on strength properties of pipeline steels under reverse uniaxial loading
摘要
Abstract
The uniaxial reverse loading tests of X70 and X80 pipeline steels are conducted based on the deformation of plate during UOE forming of large diameter LSAW line-pipe. Furthermore, the yield strength and the tensile strength are studied after uniaxial tension loading tests under different compressive pre-strain. The strength properties index influenced by the compressive pre-strain are analyzed and concluded. The results of the test show that the yield strength of both materials is decreased due to Bauschinger effect, the decreasing curve can be fit as a second order polynomial, and the compressive pre-deformation has not influence on tensile strength in general.关键词
管线钢/屈服强度/抗拉强度/预变形/反向加载/UOEKey words
pipeline steel/ yield strength/ tensile strength/ pre-strain/ reverse loading/ UOE分类
矿业与冶金引用本文复制引用
郭宝峰,赵石岩,王林锋,逄锦飞..单轴反向加载对管线钢强度性能的影响规律研究[J].燕山大学学报,2011,35(6):481-487,7.基金项目
国家自然科学基金资助项目(50945031) （50945031）
河北省自然科学基金重点项目(E2009000414) （E2009000414）
河北省应用基础研究计划重点基础研究项目(09962120D) （09962120D）
