Type IV Damage Evaluation of Low Alloy Steel Weld Joint by Small Punch Creep Testing
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...
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| Veröffentlicht in: | Zairyō 2013-02, Vol.62 (2), p.88-92 |
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| creator | Nishioka, Tomoya Uemura, Hiromi Fujiyama, Kazunari Sawaragi, Yoshiatsu |
| description | 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 degree 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 degree 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. |
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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 degree 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 degree 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.</description><identifier>ISSN: 0514-5163</identifier><language>jpn</language><subject>Chromium molybdenum steels ; Creep (materials) ; Damage ; Low alloy steels ; Position (location) ; Punches ; Sampling ; Statistical process control ; Welded joints</subject><ispartof>Zairyō, 2013-02, Vol.62 (2), p.88-92</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids></links><search><creatorcontrib>Nishioka, Tomoya</creatorcontrib><creatorcontrib>Uemura, Hiromi</creatorcontrib><creatorcontrib>Fujiyama, Kazunari</creatorcontrib><creatorcontrib>Sawaragi, Yoshiatsu</creatorcontrib><title>Type IV Damage Evaluation of Low Alloy Steel Weld Joint by Small Punch Creep Testing</title><title>Zairyō</title><description>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 degree 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 degree 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.</description><subject>Chromium molybdenum steels</subject><subject>Creep (materials)</subject><subject>Damage</subject><subject>Low alloy steels</subject><subject>Position (location)</subject><subject>Punches</subject><subject>Sampling</subject><subject>Statistical process control</subject><subject>Welded joints</subject><issn>0514-5163</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqVys0KgkAUQOFZFCTlO9xlG8H_ahlmVLQIGmopo11t4Dpjjha-fS56gVYHDt-EWW7khU7kxcGM2cbI3HV93w_W4cZinA8NwvEGO1GLCiF9C-pFJ7UCXcJZf2BLpAe4dogEd6QHnLRUHeTjqwURXHpVPCFpERvgaDqpqgWbloIM2r_O2XKf8uTgNK1-9aPJamkKJBIKdW8yL4zDaBW5sR_8Qb9gtEL-</recordid><startdate>20130201</startdate><enddate>20130201</enddate><creator>Nishioka, Tomoya</creator><creator>Uemura, Hiromi</creator><creator>Fujiyama, Kazunari</creator><creator>Sawaragi, Yoshiatsu</creator><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20130201</creationdate><title>Type IV Damage Evaluation of Low Alloy Steel Weld Joint by Small Punch Creep Testing</title><author>Nishioka, Tomoya ; Uemura, Hiromi ; Fujiyama, Kazunari ; Sawaragi, Yoshiatsu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_miscellaneous_14645750623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>jpn</language><creationdate>2013</creationdate><topic>Chromium molybdenum steels</topic><topic>Creep (materials)</topic><topic>Damage</topic><topic>Low alloy steels</topic><topic>Position (location)</topic><topic>Punches</topic><topic>Sampling</topic><topic>Statistical process control</topic><topic>Welded joints</topic><toplevel>online_resources</toplevel><creatorcontrib>Nishioka, Tomoya</creatorcontrib><creatorcontrib>Uemura, Hiromi</creatorcontrib><creatorcontrib>Fujiyama, Kazunari</creatorcontrib><creatorcontrib>Sawaragi, Yoshiatsu</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Zairyō</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nishioka, Tomoya</au><au>Uemura, Hiromi</au><au>Fujiyama, Kazunari</au><au>Sawaragi, Yoshiatsu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Type IV Damage Evaluation of Low Alloy Steel Weld Joint by Small Punch Creep Testing</atitle><jtitle>Zairyō</jtitle><date>2013-02-01</date><risdate>2013</risdate><volume>62</volume><issue>2</issue><spage>88</spage><epage>92</epage><pages>88-92</pages><issn>0514-5163</issn><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 degree 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 degree 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.</abstract></addata></record> |
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| subjects | Chromium molybdenum steels Creep (materials) Damage Low alloy steels Position (location) Punches Sampling Statistical process control Welded joints |
| title | Type IV Damage Evaluation of Low Alloy Steel Weld Joint by Small Punch Creep Testing |
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