连续球压痕法测试钢管应变时效后拉伸强度的变化  

Tensile Strength Changes of Steel Pipes after Strain Aging Measured by Continuous Ball Indentation Method

作　　者：刘燕[1,2] 汤杰[1,3] 苏成功[1,2] 王威强[1,2] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]山东省特种设备安全工程技术研究中心,济南250061 [3]浙江省特种设备检验研究院,杭州310020

出　　处：《理化检验（物理分册）》2016年第2期77-82,共6页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：国家重点基础研究发展(973)计划资助项目(2011CB013401);国家自然科学基金资助项目(51475269)

摘　　要：以不同状态的20钢国产新管和断裂管为研究对象,采用连续球压痕与常规拉伸试验相对比的方法,对不同状态钢管的屈服强度和抗拉强度进行了测试。结果表明:连续球压痕法能够准确反映应变时效前后20钢管的力学性能变化,可以对不同状态的20钢管的力学性能进行无损测试。With new 20 steel pipes in different states and fractured 20 steel pipe as study examples,the yield strength and tensile strength of the pipes were tested by the continuous ball indentation method and conventional tensile method respectively.The results show that the continuous ball indentation method could accurately reflect the changes in the mechanical properties of 20 steel pipes before and after strain aging and could be used to nondestructively test the mechanical properties of 20 steel pipes in different states.

关 键 词：连续球压痕法 20钢管 应变时效 力学性能 无损测试 

分 类 号：TG115.5[金属学及工艺—物理冶金]