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均勻化退火對低Fe/Si 比Al-Mn合金微觀組織演變的影響
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中南大學(xué) 材料科學(xué)與工程學(xué)院,中南大學(xué) 材料科學(xué)與工程學(xué)院,煙臺南山學(xué)院,煙臺南山學(xué)院,韶關(guān)乳源東陽光精箔有限公司

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中圖分類號:

TG146

基金項目:

山東省重點研發(fā)計劃項目 (2015GGX102021)；廣東省應(yīng)用型科技研發(fā)專項資金項目（2015B090926007）


Evolution of microstructure in low Fe/Si Al-Mn alloy during homogenization
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Affiliation:

School of Materials Science and Engineering,Central South University,School of Materials Science and Engineering,Central South University,School of Engineering,Yantai Nanshan University,School of Engineering,Yantai Nanshan University,Ruyuan Dongyangguang Fine Alu Foil Co,Ltd

Fund Project:

The Key Research Program of Shandong Province, China (2015GGX102021); Foundation for the Applied Science and Technology Research and Development Program of Guangdong Province, China (2015B090926007).

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    摘要:

    本文主要研究了雙輥軋制的低Fe/Si 比Al-Mn合金在不同均勻化處理過程中的微觀組織演變情況。當(dāng)對合金進(jìn)行550℃/4h的均勻化處理時,合金表面的晶粒組織從典型的纖維組織轉(zhuǎn)變成粗大的長條狀再結(jié)晶晶粒組織。合金心部的晶粒組織則隨著均勻化溫度的升高而趨向于等軸化。當(dāng)對合金進(jìn)行450℃/4h和500℃/4h的均勻化處理時,粗大的初生相開始破碎,當(dāng)均勻化溫度升高至550℃時,破碎的初生相發(fā)生粗化。在450℃/4h和500℃/4h的均勻化處理條件下,彌散相在均勻化過程中的演變主要受形核和長大機制控制,而在550℃/4h的均勻化條件下,彌散相的粗化和回溶成為主要機制。當(dāng)對合金進(jìn)行500℃/4h處理時,大量細(xì)小的含Zr彌散相從過飽和固溶體中析出。

    Abstract:

    The evolution of microstructure in Al-Mn alloy with a low ratio of Fe/Si produced by twin-roll casting (TRC) during various homogenization treatments has been investigated. The grain structure near the surface transforms from fibrous to coarse elongated recrystallized grain structure during homogenization at 550℃ for 4h. The grain in the interior tends to be equiaxed with the temperature. The primary particles are broken up after homogenization at 450℃ and 500℃ for 4h, respectively, and coarsened when temperature increases to 550℃. The evolution of dispersoids is controlled by nucleation and growth mechanisms at 450℃ and 500℃ for 4h, respectively, whereas the coarsening and dissolution are predominant mechanisms during homogenization at 550℃ for 4h. Many small size Zr-bearing dispersoids are obtained during homogenization at 500℃ for 4h.

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引用本文

胡婷,尹登峰,余鑫祥,程仁策,曹漢權(quán).均勻化退火對低Fe/Si 比Al-Mn合金微觀組織演變的影響[J].稀有金屬材料與工程,2018,47(9):2631~2636.[Hu Ting, Yin Dengfeng, Yu Xinxiang, Cheng Rence, Cao Hanquan. Evolution of microstructure in low Fe/Si Al-Mn alloy during homogenization[J]. Rare Metal Materials and Engineering,2018,47(9):2631~2636.]
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  • 收稿日期:2017-02-23
  • 最后修改日期:2017-03-28
  • 錄用日期:2017-04-14
  • 在線發(fā)布日期: 2018-11-01
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