Article(id=1200816904563716500, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1200830037944561964, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20240033, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1764226660145, onlineDateStr=2025-11-27, pubDate=1726761600000, pubDateStr=2024-09-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764226660145, onlineIssueDateStr=2025-11-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764226660145, creator=13701087609, updateTime=1764226660145, updator=13701087609, issue=Issue{id=1200830037944561964, tenantId=1146029695717560320, journalId=1189873562199433220, year='2024', volume='', issue='9', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764229791389, creator=13701087609, updateTime=1764229791389, updator=13701087609, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=41, endPage=48, ext={EN=ArticleExt(id=1200816904773431703, articleId=1200816904563716500, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=The Influence of Sr & Heat Treatment on the Morphology of Eutectic Silicon and Mechanical Properties of Al-Si-Mg Alloy, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=
This paper analyzes the effects of Sr elements and different heat treatment states on the microstructure, eutectic silicon morphology, mechanical properties, and fracture mode of Al-Si-Mg alloy. The paper also proposes a way to improve the plasticity of Al Si Mg cast alloys by regulating the morphology of eutectic silicon and reducing the number and sizes of hard and brittle phases such as Al (Fe, Mn) Si. The results show that, after Sr modification, the straight sheet eutectic silicon is transformed into fine feather shaped eutectic silicon, the elongation of the aluminum alloy increases by 137% compared to unmodified, while the alloy strength doesn’t improve significantly. After heat treatment, eutectic silicon undergoes melting and spheroidization, changing the fracture mode and mechanical properties of the aluminum alloy. After artificial aging and solid solution treatment, the yield strength and the elongation of the aluminum alloy increase by 73% and 97% respectively compared to the cast state. The quenching temperatures have a significant impact on the mechanical properties of the 2# alloy by T6 treated. When the quenching temperature is 530 ℃, after artificial aging treatment, the tensile and yield strength of the aluminum alloy are increased by 14% and 100% respectively compared to the cast state, and the elongation remains unchanged, demonstrating superior comprehensive mechanical properties.
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张鑫(1985—),男,高级工程师,硕士学位,研究方向为汽车新材料开发。
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张鑫(1985—),男,高级工程师,硕士学位,研究方向为汽车新材料开发。
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张鑫(1985—),男,高级工程师,硕士学位,研究方向为汽车新材料开发。
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2019: 340-343., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1200830045146173512, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, xref=null, ext=[AuthorCompanyExt(id=1200830045158756425, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, companyId=1200830045146173512, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Commercial Vehicle Development Institute, FAW Jiefang Automobile Co., Ltd., Changchun 130011), AuthorCompanyExt(id=1200830045167145034, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, companyId=1200830045146173512, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=一汽解放汽车有限公司商用车开发院, 长春 130011)])], figs=[ArticleFig(id=1200830049608913140, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=HX+LLWnPI0Ji6AODzeP4Cg==, figureFileBig=/zcxOmcTye+tDhfw1OZHjA==, tableContent=null), ArticleFig(id=1200830049692799223, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图1, caption=
压铸试棒形貌, figureFileSmall=HX+LLWnPI0Ji6AODzeP4Cg==, figureFileBig=/zcxOmcTye+tDhfw1OZHjA==, tableContent=null), ArticleFig(id=1200830049810239740, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=cG+Hk0aaShyquVPxgbXNDw==, figureFileBig=3CVqzpoHk6W/d0qMfBJ1KA==, tableContent=null), ArticleFig(id=1200830049915097344, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图2, caption=
铸态及不同热处理状态下的金相组织, figureFileSmall=cG+Hk0aaShyquVPxgbXNDw==, figureFileBig=3CVqzpoHk6W/d0qMfBJ1KA==, tableContent=null), ArticleFig(id=1200830049998983427, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=om+ONY5RS2Mg1brX8pd/2w==, figureFileBig=zCzowwDKcMHtOL+Y8qx9RQ==, tableContent=null), ArticleFig(id=1200830050066092293, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图3, caption=
2#合金的金相组织放大, figureFileSmall=om+ONY5RS2Mg1brX8pd/2w==, figureFileBig=zCzowwDKcMHtOL+Y8qx9RQ==, tableContent=null), ArticleFig(id=1200830050162561289, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=MFvgdnZxkdJImne7I0fYsw==, figureFileBig=CegdvyTeIB7VVkrkp+auRQ==, tableContent=null), ArticleFig(id=1200830050267418891, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图4, caption=
铸态及不同热处理状态下共晶硅形貌, figureFileSmall=MFvgdnZxkdJImne7I0fYsw==, figureFileBig=CegdvyTeIB7VVkrkp+auRQ==, tableContent=null), ArticleFig(id=1200830051412463885, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=kK+rjS7oHoovQ1v1+1wUjQ==, figureFileBig=jtAi8ACEMDD/cljvRsiROw==, tableContent=null), ArticleFig(id=1200830051542487312, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图5, caption=
2#合金共晶硅形貌放大, figureFileSmall=kK+rjS7oHoovQ1v1+1wUjQ==, figureFileBig=jtAi8ACEMDD/cljvRsiROw==, tableContent=null), ArticleFig(id=1200830051647344917, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=EKGJgpbZlsOlcoLG5R0Xdg==, figureFileBig=pqG+/qWKqDUsp7Uvdfnh2w==, tableContent=null), ArticleFig(id=1200830051743813914, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图6, caption=
2#合金铸态共晶硅EDS面扫描, figureFileSmall=EKGJgpbZlsOlcoLG5R0Xdg==, figureFileBig=pqG+/qWKqDUsp7Uvdfnh2w==, tableContent=null), ArticleFig(id=1200830051823505694, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=BftGDh9/fCV7gEUumqARNw==, figureFileBig=VyuUR3ZsYdyEqYSNe+fkdA==, tableContent=null), ArticleFig(id=1200830051924168995, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图7, caption=
2#合金高温固溶态共晶硅EDS面扫描, figureFileSmall=BftGDh9/fCV7gEUumqARNw==, figureFileBig=VyuUR3ZsYdyEqYSNe+fkdA==, tableContent=null), ArticleFig(id=1200830052041609514, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=B5LffB1jCgo5BozvcZFcyA==, figureFileBig=+ys0UUffgpfiEhLVGEvIhQ==, tableContent=null), ArticleFig(id=1200830052175827247, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图8, caption=
共晶硅形态转变示意, figureFileSmall=B5LffB1jCgo5BozvcZFcyA==, figureFileBig=+ys0UUffgpfiEhLVGEvIhQ==, tableContent=null), ArticleFig(id=1200830052272296240, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=Z4TTDLDHjEewIQgLEgtHgQ==, figureFileBig=q5gFL0wHvlxDQV2aR1SSqg==, tableContent=null), ArticleFig(id=1200830052347793714, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图9, caption=
1#和2#合金压铸试棒应力-应变曲线, figureFileSmall=Z4TTDLDHjEewIQgLEgtHgQ==, figureFileBig=q5gFL0wHvlxDQV2aR1SSqg==, tableContent=null), ArticleFig(id=1200830052427485492, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=ZhbALhIysVQ1RXY5chCleg==, figureFileBig=beSpkZ7NWvhDOsiJ7kWq5g==, tableContent=null), ArticleFig(id=1200830052511371576, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图10, caption=
铸态与不同热处理状态下断口形貌, figureFileSmall=ZhbALhIysVQ1RXY5chCleg==, figureFileBig=beSpkZ7NWvhDOsiJ7kWq5g==, tableContent=null), ArticleFig(id=1200830052620423483, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=EN, label=null, caption=null, figureFileSmall=T76RcfKpy89m1CNTP/SReQ==, figureFileBig=prVoqCoKy6P7x41O1MiG9w==, tableContent=null), ArticleFig(id=1200830052729475390, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1200816904563716500, language=CN, label=图11, caption=
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| 主要元素 | 1#合金 | 2#合金 |
| Si | 8.5 ~ 9.5 | 8.5 ~ 9.5 |
| Mg | 0.35 ~ 0.45 | 0.35 ~ 0.45 |
| Fe | 0.5 ~ 0.7 | 0.5 ~ 0.7 |
| Mn | 0.2 ~ 0.4 | 0.2 ~ 0.4 |
| Sr | | 0.02 |
| Cu | ≤ 0.2 | ≤ 0.2 |
| Al | 余量 | 余量 |
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Al-Si-Mg系亚共晶铝合金成分(质量分数) %
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| 主要元素 | 1#合金 | 2#合金 |
| Si | 8.5 ~ 9.5 | 8.5 ~ 9.5 |
| Mg | 0.35 ~ 0.45 | 0.35 ~ 0.45 |
| Fe | 0.5 ~ 0.7 | 0.5 ~ 0.7 |
| Mn | 0.2 ~ 0.4 | 0.2 ~ 0.4 |
| Sr | | 0.02 |
| Cu | ≤ 0.2 | ≤ 0.2 |
| Al | 余量 | 余量 |
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| 类别 | 工艺参数 |
| 人工时效 | 200 ℃保温3 h,空冷 |
| 固溶处理 | 低温固溶 | 490 ℃保温3 h,室温水冷 |
| 高温固溶 | 530 ℃保温3 h,室温水冷 |
| T6 | 低温T6 | 490 ℃保温3 h,室温水冷, 200 ℃保温3 h,空冷 |
| 高温T6 | 530 ℃保温3 h,室温水冷, 200 ℃保温3 h,空冷 |
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热处理工艺参数
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| 类别 | 工艺参数 |
| 人工时效 | 200 ℃保温3 h,空冷 |
| 固溶处理 | 低温固溶 | 490 ℃保温3 h,室温水冷 |
| 高温固溶 | 530 ℃保温3 h,室温水冷 |
| T6 | 低温T6 | 490 ℃保温3 h,室温水冷, 200 ℃保温3 h,空冷 |
| 高温T6 | 530 ℃保温3 h,室温水冷, 200 ℃保温3 h,空冷 |
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合金类别 与状态 | 试样 编号 | 抗拉强度 /MPa | 屈服强度 /MPa | 断后伸长率 /% |
1# 合金 | 铸态 | a | 288.7 | 146.7 | 3.7 |
| b | 296.2 | 152.1 | 2.0 |
| c | 303.4 | 149.4 | 2.5 |
| d | 290.6 | 145.3 | 3.6 |
| 均值 | 295 | 148 | 3.0 |
2# 合金 | 铸态 | a | 299.4 | 141.1 | 7.2 |
| b | 298.4 | 144.3 | 6.6 |
| c | 298.5 | 136.6 | 7.6 |
| d | 298.8 | 135.2 | 8.1 |
| e | 298.9 | 148.5 | 6.4 |
| f | 299.4 | 146.8 | 6.1 |
| 均值 | 299 | 142 | 7.0 |
时效 态 | a | 354.3 | 247.8 | 4.2 |
| b | 347.8 | 246.7 | 3.1 |
| c | 338.1 | 240.6 | 3.0 |
| d | 338.9 | 236.1 | 5.4 |
| e | 346.4 | 252.7 | 2.5 |
| f | 345.0 | 243.2 | 4.5 |
| 均值 | 345 | 245 | 3.8 |
低温 固溶 态 | a | 244.1 | 111.2 | 13.6 |
| b | 238.6 | 110.9 | 14.5 |
| c | 239.5 | 109.8 | 14.0 |
| 均值 | 241 | 111 | 14.0 |
高温 固溶 态 | a | 266.0 | 126.8 | 13.4 |
| b | 269.0 | 127.4 | 14.6 |
| c | 268.7 | 126.2 | 13.9 |
| 均值 | 268 | 127 | 14.0 |
低温 T6态 | a | 215.7 | 123.2 | 10.3 |
| b | 212.7 | 120.1 | 9.8 |
| c | 213.3 | 122.6 | 10.0 |
| 均值 | 214 | 122 | 10.0 |
高温 T6态 | a | 342.1 | 284.3 | 7.5 |
| b | 340.9 | 283.1 | 7.8 |
| c | 344.3 | 284.5 | 6.0 |
| 均值 | 342 | 284 | 7.1 |
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1#和2#合金压铸试棒力学性能
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合金类别 与状态 | 试样 编号 | 抗拉强度 /MPa | 屈服强度 /MPa | 断后伸长率 /% |
1# 合金 | 铸态 | a | 288.7 | 146.7 | 3.7 |
| b | 296.2 | 152.1 | 2.0 |
| c | 303.4 | 149.4 | 2.5 |
| d | 290.6 | 145.3 | 3.6 |
| 均值 | 295 | 148 | 3.0 |
2# 合金 | 铸态 | a | 299.4 | 141.1 | 7.2 |
| b | 298.4 | 144.3 | 6.6 |
| c | 298.5 | 136.6 | 7.6 |
| d | 298.8 | 135.2 | 8.1 |
| e | 298.9 | 148.5 | 6.4 |
| f | 299.4 | 146.8 | 6.1 |
| 均值 | 299 | 142 | 7.0 |
时效 态 | a | 354.3 | 247.8 | 4.2 |
| b | 347.8 | 246.7 | 3.1 |
| c | 338.1 | 240.6 | 3.0 |
| d | 338.9 | 236.1 | 5.4 |
| e | 346.4 | 252.7 | 2.5 |
| f | 345.0 | 243.2 | 4.5 |
| 均值 | 345 | 245 | 3.8 |
低温 固溶 态 | a | 244.1 | 111.2 | 13.6 |
| b | 238.6 | 110.9 | 14.5 |
| c | 239.5 | 109.8 | 14.0 |
| 均值 | 241 | 111 | 14.0 |
高温 固溶 态 | a | 266.0 | 126.8 | 13.4 |
| b | 269.0 | 127.4 | 14.6 |
| c | 268.7 | 126.2 | 13.9 |
| 均值 | 268 | 127 | 14.0 |
低温 T6态 | a | 215.7 | 123.2 | 10.3 |
| b | 212.7 | 120.1 | 9.8 |
| c | 213.3 | 122.6 | 10.0 |
| 均值 | 214 | 122 | 10.0 |
高温 T6态 | a | 342.1 | 284.3 | 7.5 |
| b | 340.9 | 283.1 | 7.8 |
| c | 344.3 | 284.5 | 6.0 |
| 均值 | 342 | 284 | 7.1 |
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