理化检验-物理分册2024，Vol.60Issue(4)：17-24,30,9.DOI:10.11973/lhjy-wl202404005
奥氏体不锈钢材料劣化快速评价技术
Rapid evaluation technology of austenitic stainless steel material degradation
摘要
Abstract
The Leeb hardness distribution,ultrasonic echo signal and microstructure of 304 stainless steel under different conditions were studied.The relationship between Leeb hardness dispersion rate,ultrasonic spectrum distribution and material degradation state was clarified.The D-S evidence theory was used to fuse multi-index information to evaluate austenitic stainless steel materials.The results show that the hardness dispersion rate of 304 stainless steel after normal solution treatment was less than 1.5％.When the material was degraded,the hardness dispersion rate would increase significantly,and the spectral energy distribution characteristics of ultrasonic echo signal also changed significantly.The D-S evidence theory was used to fuse the three indexes of Leeb hardness dispersion rate,low frequency energy drop ratio and high frequency energy drop ratio of ultrasonic echo,which could effectively solve the conflict between the evaluation indexes and significantly improve the confidence of the rapid evaluation results of austenitic stainless steel on site.关键词
奥氏体不锈钢/D-S证据理论/超声回波/里氏硬度离散率/置信度Key words
austenite stainless steel/D-S evidence theory/ultrasonic echo/Leeb hardness dispersion rate/confidence分类
矿业与冶金引用本文复制引用
陈仙凤,周彬,余焕伟,肖飚,任绪凯,杜锡勇,唐艳同..奥氏体不锈钢材料劣化快速评价技术[J].理化检验-物理分册,2024,60(4):17-24,30,9.基金项目
浙江省市场监管科技计划项目(20200333) （20200333）
浙江省市场监管局雏鹰计划项目(CY2022225) （CY2022225）
