TypeIV Damage Evaluation of Low Alloy Steel Weld Joint by Small Punch Creep Testing
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- NISHIOKA Tomoya
- Sumitomo Metal Tech., Inc
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- UEMURA Hiromi
- The Kansai Electric Power Co., Inc
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- FUJIYAMA Kazunari
- Meijo Univ.
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- SAWARAGI Yoshiatsu
- Sumitomo Metal Tech., Inc
Bibliographic Information
- Other Title
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- スモールパンチクリープ試験による低合金鋼溶接継手のタイプIV損傷評価
- スモールパンチクリープ シケン ニ ヨル テイゴウキンコウ ヨウセツ ツギテ ノ タイプ Ⅳ ソンショウ ヒョウカ
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Abstract
The effect of sampling location on SPC(Small Punch Creep) tests were investigated for weld joints to establish evaluation method of Type IV creep behavior. The SPC specimen shape was 10mm diameter and 0.5mm thick round disc prepared from weld joints of 2.25Cr-1Mo low alloy steel. It was found that the center of SPC specimen should be 2mm apart from the weld interface as the recommended sampling location. Creep damage was imposed for large weld joint specimens by axial creep loading at 620°C, 52MPa with the interrupted time fraction of 0.34, 0.45, 0.64 and 0.82.SPC samples were prepared from those damaged specimens following the recommended way described in this paper. Among the various SPC tests conducted, good relationships were found for the test condition of 625°C, 200N. Namely, good relationships were obtained both between minimum deflection rate and creep life fraction, and between rupture time and creep life fraction. Consequently, creep life assessment of Type IV fracture by SPC tests could be well conducted using the sampling location and the test condition recommended in this paper.
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 62 (2), 88-92, 2013
The Society of Materials Science, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680422601472
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- NII Article ID
- 130003367141
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- NII Book ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 024295814
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed