Li和LiAl隨時(shí)效溫度及時(shí)間的變化的規(guī)律。在相同的時(shí)效溫度下L12 結(jié)構(gòu)的Al3Li相中反位缺陷AlLi和LiAl隨時(shí)效時(shí)間的進(jìn)行逐漸減小,且在富Al環(huán)境下AlLi反位缺陷的濃度高于LiAl,在Al3Li相中以AlLi為主,同時(shí)存在少量的LiAl。當(dāng)時(shí)效溫度發(fā)生變化時(shí),時(shí)效溫度越高,在Al3Li相穩(wěn)定形核后LiAl、AILi反位缺陷的濃度越高,在達(dá)到平衡濃度前也具有這個(gè)特點(diǎn),但是規(guī)律性并不顯著。"/>

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時(shí)效溫度對(duì)Al-9.0at%Li合金反位原子缺陷的影響
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華北電力大學(xué),華北電力大學(xué),華北電力大學(xué),西北工業(yè)大學(xué),西北工業(yè)大學(xué)

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中圖分類號(hào):

TG146.2

基金項(xiàng)目:

國家自然科學(xué)基金資助(項(xiàng)目號(hào)51301067); 中央高?；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助(項(xiàng)目號(hào) 2015MS46)


Aged tempture infulence on antisite defect in Al-9.0at%Li alloy
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School of Enerngy,Power and Mechanical Engineering,North China Electric Power University,School of Enerngy,Power and Mechanical Engineering,North China Electric Power University,School of Enerngy,Power and Mechanical Engineering,North China Electric Power University,Northwestern Polytechnical University,Xi’an,Northwestern Polytechnical University,Xi’an

Fund Project:

National Natural Science Foundation of China (51301067); Fundamental Research Funds for the Central Universities(2015MS46)

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    摘要:

    應(yīng)用微觀相場(chǎng)法,計(jì)算Al-9.0at%Li合金沉淀相中的反位缺陷AlLi和LiAl隨時(shí)效溫度及時(shí)間的變化的規(guī)律。在相同的時(shí)效溫度下L12 結(jié)構(gòu)的Al3Li相中反位缺陷AlLi和LiAl隨時(shí)效時(shí)間的進(jìn)行逐漸減小,且在富Al環(huán)境下AlLi反位缺陷的濃度高于LiAl,在Al3Li相中以AlLi為主,同時(shí)存在少量的LiAl。當(dāng)時(shí)效溫度發(fā)生變化時(shí),時(shí)效溫度越高,在Al3Li相穩(wěn)定形核后LiAl、AILi反位缺陷的濃度越高,在達(dá)到平衡濃度前也具有這個(gè)特點(diǎn),但是規(guī)律性并不顯著。

    Abstract:

    The microscopic phase-field method was employed to study the antisite defect in Al-9.0at%Li alloys with aged time and tempture. At the same aged tempture, the antistie defect AlLi and LiAl in Al3Li phase which is L12 structure gradually reduced as the aged time wore on. Under Al-rich condition, the concentration of AlLi antisite defect was higher than the the concentration of LiAl antisite defect. In Al3Li phase, the antistie defect was mainly about AlLi, and with a few of LiAl. Then the aging temperature changed, after Al3Li phase nucleation stable, with the tempture higher, the concentration of AlLi and LiAl antistie defect were higher. Also had the characteristics before the nucleation stable, but the regularity was not remarkable.

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張建軍,張東博,薛志勇,張靜,陳錚.時(shí)效溫度對(duì)Al-9.0at%Li合金反位原子缺陷的影響[J].稀有金屬材料與工程,2016,45(5):1220~1224.[Zhang Jianjun, Zhang Dongbo, Xue Zhiyong, Zhang Jing, Chen Zheng. Aged tempture infulence on antisite defect in Al-9.0at%Li alloy[J]. Rare Metal Materials and Engineering,2016,45(5):1220~1224.]
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  • 收稿日期:2015-01-28
  • 最后修改日期:2015-08-24
  • 錄用日期:2015-09-06
  • 在線發(fā)布日期: 2016-06-02
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