[1]黃海友,王偉麗,劉記立,等.高性能Cu基形狀記憶合金組織設計研究進展[J].中國材料進展,2016,(11):016-20.[doi:10.7502/j.issn.1674-3962.2016.11.04]
HUANG Haiyou WANG Weili LIU Jili XIE Jianxin,**. Progress in Structure Design of High Performance Cu-based Shape Memory Alloys[J].MATERIALS CHINA,2016,(11):016-20.[doi:10.7502/j.issn.1674-3962.2016.11.04]
點擊復制
高性能Cu基形狀記憶合金組織設計研究進展
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中國材料進展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
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- 期數:
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2016年第11期
- 頁碼:
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016-20
- 欄目:
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- 出版日期:
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2016-11-30
文章信息/Info
- Title:
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Progress in Structure Design of High Performance Cu-based Shape Memory Alloys
- 作者:
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黃海友; 王偉麗; 劉記立; 謝建新
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1 北京科技大學現代交通金屬材料與加工技術北京實驗室，北京 100083
2 北京科技大學新金屬材料國家重點實驗室，北京 100083
- Author(s):
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HUANG Haiyou1 WANG Weili1 LIU Jili2 XIE Jianxin1; 2; **
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1. Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, Beijing100083, China
2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
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- 關鍵詞:
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; 綜述; Cu基形狀記憶合金; 組織設計; 超彈性; 貝氏體
- DOI:
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10.7502/j.issn.1674-3962.2016.11.04
- 文獻標志碼:
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A
- 摘要:
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Cu基形狀記憶合金以其良好的形狀記憶性能、優秀的導電導熱性能、相變溫度可調范圍寬以及價格低廉等諸多優點，成為具有重要發展前景的一類形狀記憶合金。但普通多晶組織Cu基形狀記憶合金在應用時存在塑性差、易發生晶界開裂、疲勞壽命短、馬氏體相變臨界應力低等問題，嚴重制約了其應用范圍。通過合理的組織設計可有效解決這些問題。本文綜述了近年來高超彈性、高馬氏體相變臨界應力Cu基形狀記憶合金組織設計方面的研究進展。研究發現，按照獲得具有高相變應變的晶粒取向、獲得大的晶粒尺度、獲得平直的低能晶界等組織設計原則制備的竹節晶組織和柱狀晶組織Cu基形狀記憶合金的超彈性可達到7%以上。再經熱處理析出貝氏體強化相后，可獲得超彈性大于5%，馬氏體相變臨界應力大于650MPa的優秀性能。
- Abstract:
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Cu-based shape memory alloys (Cu-SMAs) have the broadest application prospect owing to their excellent shape memory properties, high electrical and thermal conductivities, wide adjustable range of transformation temperature, as well as low cost. However, the ordinary polycrystalline Cu-SMAs show poor ductility and fatigue life because of suffering from intergranular fracture and low transformation critical stress, which are serious obstacles to wide application of the Cu-SMAs. Fortunately, these issues could be solved well by structure design. This paper reviewed the major progress in structure design of the Cu-based SMAs with high superelasticity and high transformation critical stress in the recent years. The results indicate that according to some principles such as obtaining grain orientation with high phase transformation strain, increasing grain size, obtaining straight low-energy GBs, etc., high superelasticity of above 7% can be obtained in columnar-gained or bamboo-liked-grained Cu-SMAs. Then, high superelasticity of above 5% and high transformation critical stress of above 650MPa can be obtained through reasonable heat treatments.
更新日期/Last Update:
2016-10-26