Tensile ductility improvement of AlSi9Cu1 alloy by chemical composition optimization
Diesel engines, characterized by higher breakout pressure and compression ratio in comparison with gasoline engines, require particularly elevated tensile properties for their engine parts. In order to maintain both high strength and high ductility in the cylinder head, i.e., to obtain higher percen...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Foundry Journal Agency
2017-03-01
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| Series: | China Foundry |
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| Online Access: | http://ff.foundryworld.com/uploadfile/2017040541822737.pdf |
| _version_ | 1818977529543786496 |
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| author | Bing-rong Zhang Jian-xiang Liu Shou-yin Zhang |
| author_facet | Bing-rong Zhang Jian-xiang Liu Shou-yin Zhang |
| author_sort | Bing-rong Zhang |
| collection | DOAJ |
| description | Diesel engines, characterized by higher breakout pressure and compression ratio in comparison with gasoline engines, require particularly elevated tensile properties for their engine parts. In order to maintain both high strength and high ductility in the cylinder head, i.e., to obtain higher percent elongation without further reducing the tensile strength, AlSi9Cu1 alloy was used to prepare the cylinder head in an aluminum diesel engine. At the same time, the effect of different modification elements, Na or Sr, and Fe content on the reduction of secondary dendrite arm spacing (SDAS) was discussed, and the design of T7 heat treatment parameters were analyzed in order to improve the tensile ductility. The result shows: (1) The SDAS is as small as 18±3 μm for the Sr modified alloy. (2) The percent elongation of the alloy with Sr modification increases by 66.7% and 42.9%, respectively, compared with the unmodified alloy and the alloy with Na modification. (3) Lower Fe content alloy (0.10%) gives good results in percent elongation compared to the alloy with higher Fe content (0.27%); in particular, after Sr modification and T7 heat treatment, the elongation of over 5% is obtained. |
| first_indexed | 2024-12-20T16:29:12Z |
| format | Article |
| id | doaj.art-69795d4a0cc9424a8ff51a374d1b8513 |
| institution | Directory Open Access Journal |
| issn | 1672-6421 1672-6421 |
| language | English |
| last_indexed | 2024-12-20T16:29:12Z |
| publishDate | 2017-03-01 |
| publisher | Foundry Journal Agency |
| record_format | Article |
| series | China Foundry |
| spelling | doaj.art-69795d4a0cc9424a8ff51a374d1b85132022-12-21T19:33:17ZengFoundry Journal AgencyChina Foundry1672-64211672-64212017-03-01142808410.1007/s41230-017-5115-5Tensile ductility improvement of AlSi9Cu1 alloy by chemical composition optimizationBing-rong Zhang0Jian-xiang Liu1Shou-yin Zhang2School of Mechanical and Automotive Engineering, Qilu University of Technology, Jinan 250353, ChinaShandong Tailai Aluminum Foundry Tech. Co. Ltd., Laiwu 270100, Shandong, ChinaLight Alloy Processing Science and Defense Technology Key Laboratory, Nanchang Hangkong University, Nanchang 330063, ChinaDiesel engines, characterized by higher breakout pressure and compression ratio in comparison with gasoline engines, require particularly elevated tensile properties for their engine parts. In order to maintain both high strength and high ductility in the cylinder head, i.e., to obtain higher percent elongation without further reducing the tensile strength, AlSi9Cu1 alloy was used to prepare the cylinder head in an aluminum diesel engine. At the same time, the effect of different modification elements, Na or Sr, and Fe content on the reduction of secondary dendrite arm spacing (SDAS) was discussed, and the design of T7 heat treatment parameters were analyzed in order to improve the tensile ductility. The result shows: (1) The SDAS is as small as 18±3 μm for the Sr modified alloy. (2) The percent elongation of the alloy with Sr modification increases by 66.7% and 42.9%, respectively, compared with the unmodified alloy and the alloy with Na modification. (3) Lower Fe content alloy (0.10%) gives good results in percent elongation compared to the alloy with higher Fe content (0.27%); in particular, after Sr modification and T7 heat treatment, the elongation of over 5% is obtained.http://ff.foundryworld.com/uploadfile/2017040541822737.pdfdiesel engine cylinder head; high temperature tensile properties; aluminum alloys; modification; combination of strength and ductility |
| spellingShingle | Bing-rong Zhang Jian-xiang Liu Shou-yin Zhang Tensile ductility improvement of AlSi9Cu1 alloy by chemical composition optimization China Foundry diesel engine cylinder head; high temperature tensile properties; aluminum alloys; modification; combination of strength and ductility |
| title | Tensile ductility improvement of AlSi9Cu1 alloy by chemical composition optimization |
| title_full | Tensile ductility improvement of AlSi9Cu1 alloy by chemical composition optimization |
| title_fullStr | Tensile ductility improvement of AlSi9Cu1 alloy by chemical composition optimization |
| title_full_unstemmed | Tensile ductility improvement of AlSi9Cu1 alloy by chemical composition optimization |
| title_short | Tensile ductility improvement of AlSi9Cu1 alloy by chemical composition optimization |
| title_sort | tensile ductility improvement of alsi9cu1 alloy by chemical composition optimization |
| topic | diesel engine cylinder head; high temperature tensile properties; aluminum alloys; modification; combination of strength and ductility |
| url | http://ff.foundryworld.com/uploadfile/2017040541822737.pdf |
| work_keys_str_mv | AT bingrongzhang tensileductilityimprovementofalsi9cu1alloybychemicalcompositionoptimization AT jianxiangliu tensileductilityimprovementofalsi9cu1alloybychemicalcompositionoptimization AT shouyinzhang tensileductilityimprovementofalsi9cu1alloybychemicalcompositionoptimization |