Defects introduced by helium irradiation at different temperatures in W and W-5wt%Re alloy
1Irradiation defects in w and W-5wt%Re alloys were characterized by DBS,TEM and SEM.2Re restricted the behavior of vacancy-type defects in tungsten.3The surface irradiation damage such as crystal gap enlargement, grain shedding and pores were observed at different irradiation temperatures.4The forma...
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| Veröffentlicht in: | Fusion engineering and design 2021-11, Vol.172, p.112746, Article 112746 |
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| creator | Wang, Zhen Wu, Haibiao Zhu, Te Song, Yamin Zhang, Peng Wang, Baoyi Xiao, Detao Cao, Xingzhong |
| description | 1Irradiation defects in w and W-5wt%Re alloys were characterized by DBS,TEM and SEM.2Re restricted the behavior of vacancy-type defects in tungsten.3The surface irradiation damage such as crystal gap enlargement, grain shedding and pores were observed at different irradiation temperatures.4The formation mechanism of the coral-like structure and the Hilly-Gully structure was analyzed.
W and W-5wt%Re alloy were irradiated by 50 keV helium ions at RT, 200 °C, 350 °C and 500 °C to investigate the influence of temperature on the microdefects and surface morphology in the sample. The microdefects in the subsurface region and the surface damage caused by irradiation were characterized by Doppler broadening spectroscopy (DBS) of slow positron beam, transmission electron microscope (TEM) and scanning electron microscopy (SEM), respectively. The results show that a large number of vacancy-type defects were produced after helium ions irradiation, especially at 500 °C, the vacancy-type defects of W alloy are higher than that of W-5wt%Re alloy, which indicated that Re restricted the behavior of vacancy-type defects in tungsten to some extent. The surface irradiation damage such as crystal gap enlargement, grain fell off and pores were observed at different irradiation temperatures. Compared with the coral-like structure observed in W, the circular objects and Hilly-gully structure were observed in W-5wt%Re alloy, and both of them increased and grew with the increase of irradiation temperature. It was speculated that the presence of Re led to the difference by analyzing the formation mechanism of the coral-like structure and the Hilly-gully structure. |
| doi_str_mv | 10.1016/j.fusengdes.2021.112746 |
| format | Article |
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W and W-5wt%Re alloy were irradiated by 50 keV helium ions at RT, 200 °C, 350 °C and 500 °C to investigate the influence of temperature on the microdefects and surface morphology in the sample. The microdefects in the subsurface region and the surface damage caused by irradiation were characterized by Doppler broadening spectroscopy (DBS) of slow positron beam, transmission electron microscope (TEM) and scanning electron microscopy (SEM), respectively. The results show that a large number of vacancy-type defects were produced after helium ions irradiation, especially at 500 °C, the vacancy-type defects of W alloy are higher than that of W-5wt%Re alloy, which indicated that Re restricted the behavior of vacancy-type defects in tungsten to some extent. The surface irradiation damage such as crystal gap enlargement, grain fell off and pores were observed at different irradiation temperatures. Compared with the coral-like structure observed in W, the circular objects and Hilly-gully structure were observed in W-5wt%Re alloy, and both of them increased and grew with the increase of irradiation temperature. It was speculated that the presence of Re led to the difference by analyzing the formation mechanism of the coral-like structure and the Hilly-gully structure.</description><identifier>ISSN: 0920-3796</identifier><identifier>EISSN: 1873-7196</identifier><identifier>DOI: 10.1016/j.fusengdes.2021.112746</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Crystal defects ; DBS ; Gullies ; Helium ions ; Irradiation temperature ; Microdefects ; Positron beams ; Radiation damage ; SEM ; TEM ; Tungsten base alloys ; Vacancies ; W and W-5wt%Re</subject><ispartof>Fusion engineering and design, 2021-11, Vol.172, p.112746, Article 112746</ispartof><rights>2021 Elsevier B.V.</rights><rights>Copyright Elsevier Science Ltd. Nov 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c273t-dbb95f06266d0b60b557a267d9f3c19971dea96d9ff859b1c25cbdd7a4b11ee73</citedby><cites>FETCH-LOGICAL-c273t-dbb95f06266d0b60b557a267d9f3c19971dea96d9ff859b1c25cbdd7a4b11ee73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0920379621005226$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Wang, Zhen</creatorcontrib><creatorcontrib>Wu, Haibiao</creatorcontrib><creatorcontrib>Zhu, Te</creatorcontrib><creatorcontrib>Song, Yamin</creatorcontrib><creatorcontrib>Zhang, Peng</creatorcontrib><creatorcontrib>Wang, Baoyi</creatorcontrib><creatorcontrib>Xiao, Detao</creatorcontrib><creatorcontrib>Cao, Xingzhong</creatorcontrib><title>Defects introduced by helium irradiation at different temperatures in W and W-5wt%Re alloy</title><title>Fusion engineering and design</title><description>1Irradiation defects in w and W-5wt%Re alloys were characterized by DBS,TEM and SEM.2Re restricted the behavior of vacancy-type defects in tungsten.3The surface irradiation damage such as crystal gap enlargement, grain shedding and pores were observed at different irradiation temperatures.4The formation mechanism of the coral-like structure and the Hilly-Gully structure was analyzed.
W and W-5wt%Re alloy were irradiated by 50 keV helium ions at RT, 200 °C, 350 °C and 500 °C to investigate the influence of temperature on the microdefects and surface morphology in the sample. The microdefects in the subsurface region and the surface damage caused by irradiation were characterized by Doppler broadening spectroscopy (DBS) of slow positron beam, transmission electron microscope (TEM) and scanning electron microscopy (SEM), respectively. The results show that a large number of vacancy-type defects were produced after helium ions irradiation, especially at 500 °C, the vacancy-type defects of W alloy are higher than that of W-5wt%Re alloy, which indicated that Re restricted the behavior of vacancy-type defects in tungsten to some extent. The surface irradiation damage such as crystal gap enlargement, grain fell off and pores were observed at different irradiation temperatures. Compared with the coral-like structure observed in W, the circular objects and Hilly-gully structure were observed in W-5wt%Re alloy, and both of them increased and grew with the increase of irradiation temperature. It was speculated that the presence of Re led to the difference by analyzing the formation mechanism of the coral-like structure and the Hilly-gully structure.</description><subject>Crystal defects</subject><subject>DBS</subject><subject>Gullies</subject><subject>Helium ions</subject><subject>Irradiation temperature</subject><subject>Microdefects</subject><subject>Positron beams</subject><subject>Radiation damage</subject><subject>SEM</subject><subject>TEM</subject><subject>Tungsten base alloys</subject><subject>Vacancies</subject><subject>W and W-5wt%Re</subject><issn>0920-3796</issn><issn>1873-7196</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkFtLxDAQhYMouF5-gwHxsTVJt0nzuKxXWBBEWfAlpM1EU7rtmqTK_nuzVHwVBoaBc85wPoQuKMkpofy6ze0YoH83EHJGGM0pZWLOD9CMVqLIBJX8EM2IZCQrhOTH6CSElhAq0szQ2w1YaGLAro9-MGMDBtc7_AGdGzfYea-N09ENPdYRG2cteOgjjrDZgtdx9LC34jXWvcHrrPyOV8-AddcNuzN0ZHUX4Px3n6LXu9uX5UO2erp_XC5WWcNEETNT17K0hDPODak5qctSaMaFkbZoqJSCGtCSp9NWpaxpw8qmNkboeU0pgChO0eWUu_XD5wghqnYYfZ9eKsZTe15VvEwqMakaP4Tgwaqtdxvtd4oStQepWvUHUu1Bqglkci4mJ6QSXw68Co2DPpFyPqFTZnD_ZvwA4WuBEQ</recordid><startdate>202111</startdate><enddate>202111</enddate><creator>Wang, Zhen</creator><creator>Wu, Haibiao</creator><creator>Zhu, Te</creator><creator>Song, Yamin</creator><creator>Zhang, Peng</creator><creator>Wang, Baoyi</creator><creator>Xiao, Detao</creator><creator>Cao, Xingzhong</creator><general>Elsevier B.V</general><general>Elsevier Science Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>202111</creationdate><title>Defects introduced by helium irradiation at different temperatures in W and W-5wt%Re alloy</title><author>Wang, Zhen ; Wu, Haibiao ; Zhu, Te ; Song, Yamin ; Zhang, Peng ; Wang, Baoyi ; Xiao, Detao ; Cao, Xingzhong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c273t-dbb95f06266d0b60b557a267d9f3c19971dea96d9ff859b1c25cbdd7a4b11ee73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Crystal defects</topic><topic>DBS</topic><topic>Gullies</topic><topic>Helium ions</topic><topic>Irradiation temperature</topic><topic>Microdefects</topic><topic>Positron beams</topic><topic>Radiation damage</topic><topic>SEM</topic><topic>TEM</topic><topic>Tungsten base alloys</topic><topic>Vacancies</topic><topic>W and W-5wt%Re</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Zhen</creatorcontrib><creatorcontrib>Wu, Haibiao</creatorcontrib><creatorcontrib>Zhu, Te</creatorcontrib><creatorcontrib>Song, Yamin</creatorcontrib><creatorcontrib>Zhang, Peng</creatorcontrib><creatorcontrib>Wang, Baoyi</creatorcontrib><creatorcontrib>Xiao, Detao</creatorcontrib><creatorcontrib>Cao, Xingzhong</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Fusion engineering and design</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Zhen</au><au>Wu, Haibiao</au><au>Zhu, Te</au><au>Song, Yamin</au><au>Zhang, Peng</au><au>Wang, Baoyi</au><au>Xiao, Detao</au><au>Cao, Xingzhong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Defects introduced by helium irradiation at different temperatures in W and W-5wt%Re alloy</atitle><jtitle>Fusion engineering and design</jtitle><date>2021-11</date><risdate>2021</risdate><volume>172</volume><spage>112746</spage><pages>112746-</pages><artnum>112746</artnum><issn>0920-3796</issn><eissn>1873-7196</eissn><abstract>1Irradiation defects in w and W-5wt%Re alloys were characterized by DBS,TEM and SEM.2Re restricted the behavior of vacancy-type defects in tungsten.3The surface irradiation damage such as crystal gap enlargement, grain shedding and pores were observed at different irradiation temperatures.4The formation mechanism of the coral-like structure and the Hilly-Gully structure was analyzed.
W and W-5wt%Re alloy were irradiated by 50 keV helium ions at RT, 200 °C, 350 °C and 500 °C to investigate the influence of temperature on the microdefects and surface morphology in the sample. The microdefects in the subsurface region and the surface damage caused by irradiation were characterized by Doppler broadening spectroscopy (DBS) of slow positron beam, transmission electron microscope (TEM) and scanning electron microscopy (SEM), respectively. The results show that a large number of vacancy-type defects were produced after helium ions irradiation, especially at 500 °C, the vacancy-type defects of W alloy are higher than that of W-5wt%Re alloy, which indicated that Re restricted the behavior of vacancy-type defects in tungsten to some extent. The surface irradiation damage such as crystal gap enlargement, grain fell off and pores were observed at different irradiation temperatures. Compared with the coral-like structure observed in W, the circular objects and Hilly-gully structure were observed in W-5wt%Re alloy, and both of them increased and grew with the increase of irradiation temperature. It was speculated that the presence of Re led to the difference by analyzing the formation mechanism of the coral-like structure and the Hilly-gully structure.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.fusengdes.2021.112746</doi></addata></record> |
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| subjects | Crystal defects DBS Gullies Helium ions Irradiation temperature Microdefects Positron beams Radiation damage SEM TEM Tungsten base alloys Vacancies W and W-5wt%Re |
| title | Defects introduced by helium irradiation at different temperatures in W and W-5wt%Re alloy |
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