Subsurface crack initiation and propagation mechanisms in gigacycle fatigue
In the very high cycle regime ( N f > 10 7 cycles) cracks can nucleate on inclusions, “supergrains” and pores, which leads to fish-eye propagation around the defect. The initiation from an inclusion or other defect is almost equal to the total crack growth lifetime, perhaps much more than 99% of...
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| Veröffentlicht in: | Acta materialia 2010-10, Vol.58 (18), p.6046-6054 |
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| creator | Huang, Zhiyong Wagner, Danièle Bathias, Claude Paris, Paul C. |
| description | In the very high cycle regime (
N
f
>
10
7
cycles) cracks can nucleate on inclusions, “supergrains” and pores, which leads to fish-eye propagation around the defect. The initiation from an inclusion or other defect is almost equal to the total crack growth lifetime, perhaps much more than 99% of this lifetime in many cases. Integration of the Paris law allows one to predict the number of cycles to crack initiation. A cyclic plastic zone around the crack exists, and recording the surface temperature of the sample during the test may allow one to follow crack propagation and determine the number of cycles to crack initiation. A thermo-mechanical model has been developed. In this study several fish-eyes from various materials have been observed by scanning electron microscopy, and the fractographic results analyzed as they related to the mechanical and thermo-mechanical models. |
| doi_str_mv | 10.1016/j.actamat.2010.07.022 |
| format | Article |
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N
f
>
10
7
cycles) cracks can nucleate on inclusions, “supergrains” and pores, which leads to fish-eye propagation around the defect. The initiation from an inclusion or other defect is almost equal to the total crack growth lifetime, perhaps much more than 99% of this lifetime in many cases. Integration of the Paris law allows one to predict the number of cycles to crack initiation. A cyclic plastic zone around the crack exists, and recording the surface temperature of the sample during the test may allow one to follow crack propagation and determine the number of cycles to crack initiation. A thermo-mechanical model has been developed. In this study several fish-eyes from various materials have been observed by scanning electron microscopy, and the fractographic results analyzed as they related to the mechanical and thermo-mechanical models.</description><identifier>ISSN: 1359-6454</identifier><identifier>EISSN: 1873-2453</identifier><identifier>DOI: 10.1016/j.actamat.2010.07.022</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Crack initiation ; Crack propagation ; Defects ; Exact sciences and technology ; Fatigue ; Fatigue failure ; Fracture mechanics ; Inclusions ; Mathematical models ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Metals and alloys ; Metals. Metallurgy ; Physics ; Porosity ; Recording ; Scanning electron microscopy ; Subsurface crack initiation ; Very high cycle fatigue</subject><ispartof>Acta materialia, 2010-10, Vol.58 (18), p.6046-6054</ispartof><rights>2010 Acta Materialia Inc.</rights><rights>2015 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c453t-aaa4ed173c52340fff564a75d3a1273d9c04ef31e67bda7c5cfaa237bef9fbbe3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1359645410004568$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23285777$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.parisnanterre.fr/hal-01686354$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Huang, Zhiyong</creatorcontrib><creatorcontrib>Wagner, Danièle</creatorcontrib><creatorcontrib>Bathias, Claude</creatorcontrib><creatorcontrib>Paris, Paul C.</creatorcontrib><title>Subsurface crack initiation and propagation mechanisms in gigacycle fatigue</title><title>Acta materialia</title><description>In the very high cycle regime (
N
f
>
10
7
cycles) cracks can nucleate on inclusions, “supergrains” and pores, which leads to fish-eye propagation around the defect. The initiation from an inclusion or other defect is almost equal to the total crack growth lifetime, perhaps much more than 99% of this lifetime in many cases. Integration of the Paris law allows one to predict the number of cycles to crack initiation. A cyclic plastic zone around the crack exists, and recording the surface temperature of the sample during the test may allow one to follow crack propagation and determine the number of cycles to crack initiation. A thermo-mechanical model has been developed. In this study several fish-eyes from various materials have been observed by scanning electron microscopy, and the fractographic results analyzed as they related to the mechanical and thermo-mechanical models.</description><subject>Applied sciences</subject><subject>Crack initiation</subject><subject>Crack propagation</subject><subject>Defects</subject><subject>Exact sciences and technology</subject><subject>Fatigue</subject><subject>Fatigue failure</subject><subject>Fracture mechanics</subject><subject>Inclusions</subject><subject>Mathematical models</subject><subject>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</subject><subject>Metals and alloys</subject><subject>Metals. Metallurgy</subject><subject>Physics</subject><subject>Porosity</subject><subject>Recording</subject><subject>Scanning electron microscopy</subject><subject>Subsurface crack initiation</subject><subject>Very high cycle fatigue</subject><issn>1359-6454</issn><issn>1873-2453</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqFkEtP4zAQgKMVSMtjf8JKuSDBIcXPuD0hhNgtohIH2LM1mYxbd_ModoLUf4-rVFw52R5_8_qy7DdnM854ebudAQ7QwjATLMWYmTEhfmRnfG5kIZSWJ-ku9aIolVY_s_MYt4xxYRQ7y55fxyqOwQFSjgHwf-47P3gYfN_l0NX5LvQ7WE_vlnADnY9tTFS-9mvAPTaUu_S9HukyO3XQRPp1PC-yf38e3x6Wxerl79PD_arANMtQAICimhuJWkjFnHO6VGB0LSENJesFMkVOcipNVYNBjQ5ASFORW7iqInmR3Ux1N9DYXfAthL3twdvl_coeYknKvJRaffDEXk9s2uN9pDjY1kekpoGO-jFaXprUlOtSJFRPKIY-xkDuqzZn9iDabu1RtD2ItszYJDrlXR1bQERoXIAOffxKFlLMtTEmcXcTR8nNh6dgI3rqkGofCAdb9_6bTp8a0pcy</recordid><startdate>20101001</startdate><enddate>20101001</enddate><creator>Huang, Zhiyong</creator><creator>Wagner, Danièle</creator><creator>Bathias, Claude</creator><creator>Paris, Paul C.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>1XC</scope><scope>VOOES</scope></search><sort><creationdate>20101001</creationdate><title>Subsurface crack initiation and propagation mechanisms in gigacycle fatigue</title><author>Huang, Zhiyong ; Wagner, Danièle ; Bathias, Claude ; Paris, Paul C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c453t-aaa4ed173c52340fff564a75d3a1273d9c04ef31e67bda7c5cfaa237bef9fbbe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Applied sciences</topic><topic>Crack initiation</topic><topic>Crack propagation</topic><topic>Defects</topic><topic>Exact sciences and technology</topic><topic>Fatigue</topic><topic>Fatigue failure</topic><topic>Fracture mechanics</topic><topic>Inclusions</topic><topic>Mathematical models</topic><topic>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</topic><topic>Metals and alloys</topic><topic>Metals. Metallurgy</topic><topic>Physics</topic><topic>Porosity</topic><topic>Recording</topic><topic>Scanning electron microscopy</topic><topic>Subsurface crack initiation</topic><topic>Very high cycle fatigue</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Huang, Zhiyong</creatorcontrib><creatorcontrib>Wagner, Danièle</creatorcontrib><creatorcontrib>Bathias, Claude</creatorcontrib><creatorcontrib>Paris, Paul C.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Acta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Huang, Zhiyong</au><au>Wagner, Danièle</au><au>Bathias, Claude</au><au>Paris, Paul C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Subsurface crack initiation and propagation mechanisms in gigacycle fatigue</atitle><jtitle>Acta materialia</jtitle><date>2010-10-01</date><risdate>2010</risdate><volume>58</volume><issue>18</issue><spage>6046</spage><epage>6054</epage><pages>6046-6054</pages><issn>1359-6454</issn><eissn>1873-2453</eissn><abstract>In the very high cycle regime (
N
f
>
10
7
cycles) cracks can nucleate on inclusions, “supergrains” and pores, which leads to fish-eye propagation around the defect. The initiation from an inclusion or other defect is almost equal to the total crack growth lifetime, perhaps much more than 99% of this lifetime in many cases. Integration of the Paris law allows one to predict the number of cycles to crack initiation. A cyclic plastic zone around the crack exists, and recording the surface temperature of the sample during the test may allow one to follow crack propagation and determine the number of cycles to crack initiation. A thermo-mechanical model has been developed. In this study several fish-eyes from various materials have been observed by scanning electron microscopy, and the fractographic results analyzed as they related to the mechanical and thermo-mechanical models.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.actamat.2010.07.022</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Crack initiation Crack propagation Defects Exact sciences and technology Fatigue Fatigue failure Fracture mechanics Inclusions Mathematical models Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals and alloys Metals. Metallurgy Physics Porosity Recording Scanning electron microscopy Subsurface crack initiation Very high cycle fatigue |
| title | Subsurface crack initiation and propagation mechanisms in gigacycle fatigue |
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