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鎂合金熱輥軋制溫升效應(yīng)研究
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東北大學(xué) 材料電磁過程研究教育部重點(diǎn)實(shí)驗(yàn)室,東北大學(xué) 材料電磁過程研究教育部重點(diǎn)實(shí)驗(yàn)室,東北大學(xué) 材料電磁過程研究教育部重點(diǎn)實(shí)驗(yàn)室,東北大學(xué) 材料電磁過程研究教育部重點(diǎn)實(shí)驗(yàn)室,東北大學(xué) 材料電磁過程研究教育部重點(diǎn)實(shí)驗(yàn)室

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中圖分類號(hào):

TG335.58

基金項(xiàng)目:

國家“973”計(jì)劃資助項(xiàng)目(2013CB632203)；遼寧省自然科學(xué)基金資助項(xiàng)目(2014028027)；中央高?；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助(N120509002和N120309003);國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃（973計(jì)劃）


Study on the temperature rise effect of AZ31B Mg alloy during rolling with heated rolls
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Affiliation:

Key Laboratory of Electromagnetic Processing of Materials, Northeastern University,,,,

Fund Project:

National Natural Science Foundation of China (51002126); Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials (10zxfk30)

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    摘要:

    本研究在之前冷輥軋制溫升研究的基礎(chǔ)上,進(jìn)一步研究了AZ31B鎂合金不同工藝條件下熱輥軋制厚度方向溫度分布及其與組織的關(guān)系,并在此基礎(chǔ)上建立了能量守恒的簡化方程來預(yù)測溫升。結(jié)果表明：變形過程中溫升都與壓下量正相關(guān),而與初軋溫度反相關(guān)。輥溫顯著影響軋制時(shí)的表面溫降和總體溫升,使得熱輥軋制表層組織中孿晶明顯減小,軋板中再結(jié)晶更加充分。此外,基于能量守恒的簡化方程的計(jì)算結(jié)果與實(shí)測數(shù)據(jù)吻合較好。

    Abstract:

    The temperature distribution along the thickness direction of AZ3lB Mg alloy was measured during rolling with heated rolls, basing on the previous study of temperature rise effect during rolling with cold (RT) rolls. The effect of different rolling conditions on temperature distribution and its relation with microstructure were investigated. On this basis, simplified energy-based state equations were established to predict temperature rises. The results show the temperature rises during rolling both increased with either increased reduction or decreased initial rolling temperature. The roll temperature had obvious effects on surface temperature and overall temperature rise. As a result, the amount of twin in surface layer decreased sharply and the overall recrystallization zone increased during rolling with heated roll. The calculated results by energy-based state equations were in good agreement with experimental ones.

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丁云鵬,朱強(qiáng),樂啟熾,張志強(qiáng),崔建忠.鎂合金熱輥軋制溫升效應(yīng)研究[J].稀有金屬材料與工程,2017,46(9):2481~2486.[dingyunpeng, zhuqiang, leqichi, zhangzhiqiang, cuijianzhong. Study on the temperature rise effect of AZ31B Mg alloy during rolling with heated rolls[J]. Rare Metal Materials and Engineering,2017,46(9):2481~2486.]
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  • 收稿日期:2015-05-09
  • 最后修改日期:2015-07-12
  • 錄用日期:2015-09-07
  • 在線發(fā)布日期: 2017-11-29
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