Article(id=1236327379933655287, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2023.05.032, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1682697600000, receivedDateStr=2023-04-29, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772693017228, onlineDateStr=2026-03-05, pubDate=1696089600000, pubDateStr=2023-10-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772693017228, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772693017228, creator=13701087609, updateTime=1772693017228, updator=13701087609, issue=Issue{id=1236327378968965364, tenantId=1146029695717560320, journalId=1235980550691926019, year='2023', volume='43', issue='5', pageStart='1', pageEnd='177', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772693016997, creator=13701087609, updateTime=1772693111855, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236327776882577759, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236327776882577760, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236327378968965364, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=140, endPage=143, ext={EN=ArticleExt(id=1236327380306948348, articleId=1236327379933655287, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Effect of Heat Treatment on Structure and Properties of Cast Mg-Sn-Al-Zn-Si Alloys, columnId=1236276108207902848, journalTitle=Mining and Metallurgical Engineering, columnName=MATERIALS, runingTitle=null, highlight=null, articleAbstract=
The effects of different heat treatment regimes on the microstructure and properties of as-cast Mg-5Sn-1.5Al-1Zn-1Si alloy were investigated. The results indicate that during the dissolution of solid, as the dissolution time is prolongsed, the alloy dendrites gradually dissolve and the grains gradually spheroidize. It is shown that the appropriate dissolution parameter is 510 ℃ × 8 h, and the alloy after such treatment has an evenly distributed microstructure, with a trace of precipitation of fine second-phase particles from the matrix, and thus possesses a high elongation rate. The appropriate aging parameter for the alloy is 200 ℃ × 16 h, and due to precipitation and migration of the phases segregating at the grain boundary, the alloy after aging treatment possesses clear grain boundaries and a microstructure with high uniformity, and also has the yield strength up to 136.3 MPa, which is higher than that of the as-cast alloy by 16.5%. After a treatment including 8 hours of solid dissolution at 510 ℃ and 16 hours of aging at 200 ℃, the alloy has its uniformity and dispersion of the microstructure further improved, and its tensile strength and hardness reach to 178.2 MPa and 59.6HB, respectively, up by 21.6% and 23.4% compared to the as-cast alloy.
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研究了不同热处理制度对铸态Mg-5Sn-1.5Al-1Zn-1Si合金组织性能的影响。结果表明,固溶处理时,随着固溶时间延长,合金枝晶逐渐溶解、晶粒逐步球化,适宜的固溶处理制度为510 ℃ × 8 h,此时合金组织分布均匀,析出少量细小的二次颗粒相,延伸率较高;合金适宜的时效处理制度为200 ℃ × 16 h,此时偏聚在晶界处的合金相析出迁移,晶界清晰,组织均匀度高,合金屈服强度达到136.3 MPa,较铸态提升16.5%。510 ℃固溶8 h+200 ℃时效16 h处理后,组织均匀度和弥散程度进一步提升,抗拉强度和硬度分别达到178.2 MPa和59.6HB,相对铸态合金分别提升了21.6%和23.4%。
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张建新(1972—),男,河南商丘人,博士,副教授,主要从事高性能有色金属材料的开发与应用研究。
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马冬(1996—),男,河南信阳人,硕士研究生,主要从事耐热镁合金研究。
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马冬(1996—),男,河南信阳人,硕士研究生,主要从事耐热镁合金研究。
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