Nondestructive Evaluation of Long-Term Creep Damage and Its Availability in ASME Grade 91 Steel Welds

Journal of The Society of Materials Science, Japan Pub Date : 2023-10-15 DOI:10.2472/jsms.72.705

Kota SAWADA, Yasushi TANIUCHI, Takehiro NOJIMA, Kazuhiro KIMURA, Takahiro KIMURA, Kyohei NOMURA, Noriko SAITO, Akira MORITA, Hiroyuki HAYAKAWA, Takao SUGIUCHI, Kazushige OHBITSU, Junichi ISHIHARA, Masatsugu YAGUCHI, Koju NISHIZAWA, Hideo IIDA, Kouji OHI, Tomoya NISHIOKA, Naoya EMI, Hirokazu OKADA, Nobuyoshi KOMAI, Kyohei HAYASHI, Kimihiko TOMINAGA

{"title":"Nondestructive Evaluation of Long-Term Creep Damage and Its Availability in ASME Grade 91 Steel Welds","authors":"Kota SAWADA, Yasushi TANIUCHI, Takehiro NOJIMA, Kazuhiro KIMURA, Takahiro KIMURA, Kyohei NOMURA, Noriko SAITO, Akira MORITA, Hiroyuki HAYAKAWA, Takao SUGIUCHI, Kazushige OHBITSU, Junichi ISHIHARA, Masatsugu YAGUCHI, Koju NISHIZAWA, Hideo IIDA, Kouji OHI, Tomoya NISHIOKA, Naoya EMI, Hirokazu OKADA, Nobuyoshi KOMAI, Kyohei HAYASHI, Kimihiko TOMINAGA","doi":"10.2472/jsms.72.705","DOIUrl":null,"url":null,"abstract":"In order to evaluate residual creep life of ASME Grade 91 weldment, Phased Array Ultrasonic Testing (PAUT), High Temperature Superconductor - direct current - Superconducting Quantum Interference Device (ECT・HTS-dc-SQUID), observation of replica and hardness measurement were used to detect creep damages for creep interrupted specimens. It was clarified that the threshold of the creep damage that PAUT and ECT・HTS-dc-SQUID could detect appear in later stage of creep deformation. Creep voids were detected on the replica obtained from surface of creep specimens just before creep rupture. Capacitive strain sensor, laser displacement meter and SPICA strain measurement were tried to detect creep strain. Creep curves by the capacitive strain sensor and laser displacement meter were similar with that of conventional extensometer with a linear gauge. Strain measured by SPICA in heat affected zone monotonously increased during creep. Strain measured by capacitive strain sensor, laser displacement meter and SPICA and damage detected by PAUT and ECT・HTS-dc-SQUID were assumed to be useful for residual creep life assessment.","PeriodicalId":17390,"journal":{"name":"Journal of The Society of Materials Science, Japan","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The Society of Materials Science, Japan","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2472/jsms.72.705","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

In order to evaluate residual creep life of ASME Grade 91 weldment, Phased Array Ultrasonic Testing (PAUT), High Temperature Superconductor - direct current - Superconducting Quantum Interference Device (ECT・HTS-dc-SQUID), observation of replica and hardness measurement were used to detect creep damages for creep interrupted specimens. It was clarified that the threshold of the creep damage that PAUT and ECT・HTS-dc-SQUID could detect appear in later stage of creep deformation. Creep voids were detected on the replica obtained from surface of creep specimens just before creep rupture. Capacitive strain sensor, laser displacement meter and SPICA strain measurement were tried to detect creep strain. Creep curves by the capacitive strain sensor and laser displacement meter were similar with that of conventional extensometer with a linear gauge. Strain measured by SPICA in heat affected zone monotonously increased during creep. Strain measured by capacitive strain sensor, laser displacement meter and SPICA and damage detected by PAUT and ECT・HTS-dc-SQUID were assumed to be useful for residual creep life assessment.

查看原文本刊更多论文

ASME 91级钢焊缝长期蠕变损伤无损评价及其有效性

为了评估ASME 91级焊件的残余蠕变寿命，采用相控阵超声检测(PAUT)、高温超导-直流-超导量子干涉仪(ECT·HTS-dc-SQUID)、复形观察和硬度测量等方法对蠕变中断试样进行蠕变损伤检测。结果表明，pat和ECT·HTS-dc-SQUID能够检测到的蠕变损伤阈值出现在蠕变变形后期。在蠕变试样发生蠕变破裂前，在试样表面检测到蠕变空洞。采用电容式应变传感器、激光位移仪和SPICA应变测量法检测蠕变应变。电容式应变传感器和激光位移计测得的蠕变曲线与传统的线性应变计测得的蠕变曲线相似。SPICA测得的热影响区应变在蠕变过程中单调增大。假设电容应变传感器、激光位移仪和SPICA测量的应变和PAUT和ECT·HTS-dc-SQUID检测的损伤可用于残余蠕变寿命评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of The Society of Materials Science, Japan

自引率

0.00%

发文量