[1]崔嚴光,萬見峰,滿蛟,等.形狀記憶合金中的馬氏體變體在外場下的再取向和再分布機制[J].中國材料進展,2012,(3):039-42.[doi:10.7502/j.issn.1674-3962.2012.03.05]
CUI Yanguang,WAN Jianfeng,MAN Jiao,et al.Mechanism of Reorientation and Redistribution of Multi Variants in Shape Memory Alloys under External Field[J].MATERIALS CHINA,2012,(3):039-42.[doi:10.7502/j.issn.1674-3962.2012.03.05]
點擊復制
形狀記憶合金中的馬氏體變體在外場下的再取向和再分布機制(
)
中國材料進展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
-
- 期數:
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2012年第3期
- 頁碼:
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039-42
- 欄目:
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特約研究論文
- 出版日期:
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2012-03-25
文章信息/Info
- Title:
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Mechanism of Reorientation and Redistribution of Multi Variants in Shape Memory Alloys under External Field
- 作者:
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崔嚴光; 萬見峰; 滿蛟; 張驥華; 戎詠華
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（上海交通大學材料科學與工程學院，上海200240）
- Author(s):
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CUI Yanguang; WAN Jianfeng; MAN Jiao; ZHANG Jihua; RONG Yonghua
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（School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China）
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- 關鍵詞:
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再取向; 多變體; 應力; 孿晶邊界; 相場
- DOI:
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10.7502/j.issn.1674-3962.2012.03.05
- 文獻標志碼:
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A
- 摘要:
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利用相場方法研究了馬氏體變體在循環應力作用下再取向和再分布的微觀機制。模擬結果表明，隨著外應力的增加，在孿晶界面會出現母相的形核和長大，以此實現變體間的轉化，這是3種變體轉化為2種變體的主要再取向機制；卸載后消失的變體在孿晶界面重新形核并長大以完成系統內微觀組織的再分布。在MnCu合金中這種機制是控制循環載荷下形狀記憶效應產生的主要機制。
- Abstract:
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The mechanism of reorientation and redistribution of martensitic multivariants under the cyclic stress was studied by using PhaseField method. The results showed that under the small loading,the twin boundary migration is the main mechanism and three variants can be kept in the system,with the increase of external stress, the nucleation and growth of parent at the twin interface is the main mechanism to realize the reorientation of 3→2 variants. After removing the loading, the vanished variant nucleates at the twin boundary to perform the redistribution of inner microstructure in the system. This kind of mechanism controls the shape memory effect of the MnCu alloy during the cyclic loading.
更新日期/Last Update:
2012-05-03