Microstructure and mechanical properties of strontium-modified ADC12 alloy processed by heat treatment
The effects of heat treatment and strontium (Sr) addition on the microstructure and mechanical properties of ADC12 alloys were investigated, and two-stage solution treatment was introduced. The results indicated that the addition of Sr obviously refined the microstructure of ADC12 alloys. When 0.05...
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| Veröffentlicht in: | Journal of Central South University 2018-06, Vol.25 (6), p.1263-1273 |
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| creator | Huang, Zhi-xiang Yan, Hong Wang, Zhi-wei |
| description | The effects of heat treatment and strontium (Sr) addition on the microstructure and mechanical properties of ADC12 alloys were investigated, and two-stage solution treatment was introduced. The results indicated that the addition of Sr obviously refined the microstructure of ADC12 alloys. When 0.05 wt% Sr was added into the alloy, the eutectic Si phase was fully modified into fine fibrous structure;
α
-Al and
β
-Al
5
FeSi phases were best refined; and the eutectic Al
2
Cu phase was modified into block-like Al
2
Cu phase that continuously distributed at the grain boundary. The ultimate tensile strength (UTS) (270.63 MPa) and elongation (3.19%) were increased by 51.2% and 73.4% respectively compared with unmodified alloys. After the two-stage solution treatment (500 °C, 6 h+520 °C, 4 h), for 0.05 wt% Sr modified ADC12 alloys, the Si phases transformed into fine particle structure and Al
2
Cu phases were fully dissolved. The peak hardness value of the alloys processed by the two-stage solution treatment was increased by 8.3% and 6.8% respectively compared to solution treatment at 500 °C and 520 °C. After the aging treatment (175 °C, 7 h), the hardness and UTS were increased by 38.73% and 13.96% respectively when compared with the unmodified alloy. |
| doi_str_mv | 10.1007/s11771-018-3823-7 |
| format | Article |
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α
-Al and
β
-Al
5
FeSi phases were best refined; and the eutectic Al
2
Cu phase was modified into block-like Al
2
Cu phase that continuously distributed at the grain boundary. The ultimate tensile strength (UTS) (270.63 MPa) and elongation (3.19%) were increased by 51.2% and 73.4% respectively compared with unmodified alloys. After the two-stage solution treatment (500 °C, 6 h+520 °C, 4 h), for 0.05 wt% Sr modified ADC12 alloys, the Si phases transformed into fine particle structure and Al
2
Cu phases were fully dissolved. The peak hardness value of the alloys processed by the two-stage solution treatment was increased by 8.3% and 6.8% respectively compared to solution treatment at 500 °C and 520 °C. After the aging treatment (175 °C, 7 h), the hardness and UTS were increased by 38.73% and 13.96% respectively when compared with the unmodified alloy.</description><identifier>ISSN: 2095-2899</identifier><identifier>EISSN: 2227-5223</identifier><identifier>DOI: 10.1007/s11771-018-3823-7</identifier><language>eng</language><publisher>Changsha: Central South University</publisher><subject>Alloys ; Aluminum ; Elongation ; Engineering ; Eutectic alloys ; Fibrous structure ; Grain boundaries ; Mechanical properties ; Metallic Materials ; Microstructure ; Phases ; Silicon ; Solution heat treatment ; Ultimate tensile strength</subject><ispartof>Journal of Central South University, 2018-06, Vol.25 (6), p.1263-1273</ispartof><rights>Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018</rights><rights>Copyright Springer Science & Business Media 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c355t-46b62fbf8518e843b9a6c91e6e333218be1308567af9eb93ea7066e703a745263</citedby><cites>FETCH-LOGICAL-c355t-46b62fbf8518e843b9a6c91e6e333218be1308567af9eb93ea7066e703a745263</cites><orcidid>0000-0003-1835-3675</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11771-018-3823-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11771-018-3823-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Huang, Zhi-xiang</creatorcontrib><creatorcontrib>Yan, Hong</creatorcontrib><creatorcontrib>Wang, Zhi-wei</creatorcontrib><title>Microstructure and mechanical properties of strontium-modified ADC12 alloy processed by heat treatment</title><title>Journal of Central South University</title><addtitle>J. Cent. South Univ</addtitle><description>The effects of heat treatment and strontium (Sr) addition on the microstructure and mechanical properties of ADC12 alloys were investigated, and two-stage solution treatment was introduced. The results indicated that the addition of Sr obviously refined the microstructure of ADC12 alloys. When 0.05 wt% Sr was added into the alloy, the eutectic Si phase was fully modified into fine fibrous structure;
α
-Al and
β
-Al
5
FeSi phases were best refined; and the eutectic Al
2
Cu phase was modified into block-like Al
2
Cu phase that continuously distributed at the grain boundary. The ultimate tensile strength (UTS) (270.63 MPa) and elongation (3.19%) were increased by 51.2% and 73.4% respectively compared with unmodified alloys. After the two-stage solution treatment (500 °C, 6 h+520 °C, 4 h), for 0.05 wt% Sr modified ADC12 alloys, the Si phases transformed into fine particle structure and Al
2
Cu phases were fully dissolved. The peak hardness value of the alloys processed by the two-stage solution treatment was increased by 8.3% and 6.8% respectively compared to solution treatment at 500 °C and 520 °C. After the aging treatment (175 °C, 7 h), the hardness and UTS were increased by 38.73% and 13.96% respectively when compared with the unmodified alloy.</description><subject>Alloys</subject><subject>Aluminum</subject><subject>Elongation</subject><subject>Engineering</subject><subject>Eutectic alloys</subject><subject>Fibrous structure</subject><subject>Grain boundaries</subject><subject>Mechanical properties</subject><subject>Metallic Materials</subject><subject>Microstructure</subject><subject>Phases</subject><subject>Silicon</subject><subject>Solution heat treatment</subject><subject>Ultimate tensile strength</subject><issn>2095-2899</issn><issn>2227-5223</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kLlOAzEQhi0EElHIA9BZojb42PVRRuGUgmigtrybMTHaI9jeIm-PV0GiopkZjb5_jh-ha0ZvGaXqLjGmFCOUaSI0F0SdoQXnXJGac3FeampqwrUxl2iVUmioYFwKaeQC-dfQxjHlOLV5ioDdsMM9tHs3hNZ1-BDHA8QcIOHR44KNQw5TT_pxF3yAHV7fbxjHruvG4wy3kFLpNke8B5dxjiX2MOQrdOFdl2D1m5fo4_HhffNMtm9PL5v1lrSirjOpZCO5b7yumQZdicY42RoGEoQQnOkGmKC6lsp5A40R4BSVEhQVTlV1-WmJbk5zyy3fE6Rsv8YpDmWl5VTqikmpTaHYiZpfTxG8PcTQu3i0jNrZUXty1BZH7eyoVUXDT5pU2OET4t_k_0U_PNN5IQ</recordid><startdate>20180601</startdate><enddate>20180601</enddate><creator>Huang, Zhi-xiang</creator><creator>Yan, Hong</creator><creator>Wang, Zhi-wei</creator><general>Central South University</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0003-1835-3675</orcidid></search><sort><creationdate>20180601</creationdate><title>Microstructure and mechanical properties of strontium-modified ADC12 alloy processed by heat treatment</title><author>Huang, Zhi-xiang ; Yan, Hong ; Wang, Zhi-wei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c355t-46b62fbf8518e843b9a6c91e6e333218be1308567af9eb93ea7066e703a745263</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Alloys</topic><topic>Aluminum</topic><topic>Elongation</topic><topic>Engineering</topic><topic>Eutectic alloys</topic><topic>Fibrous structure</topic><topic>Grain boundaries</topic><topic>Mechanical properties</topic><topic>Metallic Materials</topic><topic>Microstructure</topic><topic>Phases</topic><topic>Silicon</topic><topic>Solution heat treatment</topic><topic>Ultimate tensile strength</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Huang, Zhi-xiang</creatorcontrib><creatorcontrib>Yan, Hong</creatorcontrib><creatorcontrib>Wang, Zhi-wei</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of Central South University</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Huang, Zhi-xiang</au><au>Yan, Hong</au><au>Wang, Zhi-wei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructure and mechanical properties of strontium-modified ADC12 alloy processed by heat treatment</atitle><jtitle>Journal of Central South University</jtitle><stitle>J. Cent. South Univ</stitle><date>2018-06-01</date><risdate>2018</risdate><volume>25</volume><issue>6</issue><spage>1263</spage><epage>1273</epage><pages>1263-1273</pages><issn>2095-2899</issn><eissn>2227-5223</eissn><abstract>The effects of heat treatment and strontium (Sr) addition on the microstructure and mechanical properties of ADC12 alloys were investigated, and two-stage solution treatment was introduced. The results indicated that the addition of Sr obviously refined the microstructure of ADC12 alloys. When 0.05 wt% Sr was added into the alloy, the eutectic Si phase was fully modified into fine fibrous structure;
α
-Al and
β
-Al
5
FeSi phases were best refined; and the eutectic Al
2
Cu phase was modified into block-like Al
2
Cu phase that continuously distributed at the grain boundary. The ultimate tensile strength (UTS) (270.63 MPa) and elongation (3.19%) were increased by 51.2% and 73.4% respectively compared with unmodified alloys. After the two-stage solution treatment (500 °C, 6 h+520 °C, 4 h), for 0.05 wt% Sr modified ADC12 alloys, the Si phases transformed into fine particle structure and Al
2
Cu phases were fully dissolved. The peak hardness value of the alloys processed by the two-stage solution treatment was increased by 8.3% and 6.8% respectively compared to solution treatment at 500 °C and 520 °C. After the aging treatment (175 °C, 7 h), the hardness and UTS were increased by 38.73% and 13.96% respectively when compared with the unmodified alloy.</abstract><cop>Changsha</cop><pub>Central South University</pub><doi>10.1007/s11771-018-3823-7</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0003-1835-3675</orcidid></addata></record> |
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| subjects | Alloys Aluminum Elongation Engineering Eutectic alloys Fibrous structure Grain boundaries Mechanical properties Metallic Materials Microstructure Phases Silicon Solution heat treatment Ultimate tensile strength |
| title | Microstructure and mechanical properties of strontium-modified ADC12 alloy processed by heat treatment |
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