| 两种定向凝固方法DZ22合金的力学性能和组织 |
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| 引用本文： | 刘忠元,李建国,傅恒志,佘力,陈荣章,王罗宝.两种定向凝固方法DZ22合金的力学性能和组织[J].材料研究学报,1996,10(1):13-18. |
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| 作者姓名： | 刘忠元 李建国 傅恒志 佘力 陈荣章 王罗宝 |
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| 作者单位： | 西北工业大学，北京航空材料研究所 |
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| 摘 要： | 比较了超高梯度定向凝固法（ＺＭＬＭＣ法）和普通定向凝固法（ＨＲＳ法）对ＤＺ２２合金的高温力学性能和组织的影响。结果表明：ＺＭＬＭＣ法大幅度地提高了合金的高温力学性能，９８０℃，２２０ＭＰａ条件下的高温持久寿命由７２ｈ提高到１６８ｈ；一次、二次枝晶臂间距λ１和λ２分别由１５０ｕｍ和５０ｕｍ左右到减小到６８ｕｍ和１６ｕｍ左右；元素的枝晶偏析得到抑制；合金显微组织的组成相ｒ’，（ｒ＋ｒ’）共晶，ＭＣ型碳
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| 关 键 词： | DZ22合金 枝晶特性 力学性能 定向凝固法 合金 |
| 收稿时间： | 1996-02-25 |
| 修稿时间： | 1996-02-25 |
MECHANICAL PROPERTIES AND STRUCTURE OF SUPERALLOY DZ22 WITH TWO DIRECTIONAL SOLIDIFICATION PROCESSES |
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| LIU Zhongyuan,LI Jianguo,FU Hengzhi SHE Li,CHEN Rongzhang,WANG Luobao.MECHANICAL PROPERTIES AND STRUCTURE OF SUPERALLOY DZ22 WITH TWO DIRECTIONAL SOLIDIFICATION PROCESSES[J].Chinese Journal of Materials Research,1996,10(1):13-18. |
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| Authors: | LIU Zhongyuan LI Jianguo FU Hengzhi SHE Li CHEN Rongzhang WANG Luobao |
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| Affiliation: | LIU Zhongyuan; LI Jianguo; FU Hengzhi (Northwestern Polytechnical University)SHE Li; CHEN Rongzhang; WANG Luobao(Beijing Institute of Aeronautical Materials) |
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| Abstract: | This paper deals with mechanical properties and structure of superalloy DZ22 with zone melting and liquid metal cooling (ZMLMC) directional solidification process and high-rate solidification (HRS)process. Experimental results show that ZMLMC has more adv |
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| Keywords: | ZMLMC process HRS process superalloy DZ22 dendritic characteristicfractograph |
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