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GH738合金冷變形及中間退火再結(jié)晶行為研究
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Cold Deformation of GH738 Alloy and Its Recrystallization Behavior during Intermediate Annealing
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    摘要:

    通過光學(xué)顯微鏡、掃描電鏡、電子背散射衍射、顯微硬度計(jì)等手段，系統(tǒng)研究了GH738合金不同冷軋變形量后中間退火組織演變規(guī)律。研究表明：變形量是影響加工硬化的主要因素；經(jīng)過不同冷軋變形后，1000 ℃退火奧氏體未發(fā)生再結(jié)晶；在1040～1080 ℃進(jìn)行退火處理，可得到均勻細(xì)小的等軸晶。建立了GH738合金冷加工本構(gòu)方程和再結(jié)晶晶粒長大方程

    Abstract:

    The intermediate annealed microstructure evolution in GH738 alloy after different rolling reductions was studied by OM, SEM, EBSD and HV tester. Results show that the strain hardening is mainly affected by rolling reduction. With different cold deformation degrees, austenite recrystallization does not occur when the annealing temperature is 1000 oC. The uniform, fine and equiaxed grains are obtained when annealing at 1040~1080 oC. The cold working constitutive equation and the recrystallization grain growth equation of GH738 alloy are established

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葉校瑛,董建新,張麥倉. GH738合金冷變形及中間退火再結(jié)晶行為研究[J].稀有金屬材料與工程,2013,42(7):1423~1428.[Ye Xiaoying, Dong Jianxin, Zhang Maicang. Cold Deformation of GH738 Alloy and Its Recrystallization Behavior during Intermediate Annealing[J]. Rare Metal Materials and Engineering,2013,42(7):1423~1428.]
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  • 收稿日期:2012-07-12
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