【摘要】：研究了熱輥軋制中AZ31B鎂合金不同工藝條件下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:變形過程中各層金屬的溫升均與壓下率正相關(guān),而與初軋溫度反相關(guān)。輥溫顯著影響軋制時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 in thickness direction of AZ31B magnesium alloy in hot roll rolling process and its relationship with microstructure were studied. On the basis of this, a simplified equation of energy conservation was established to predict the temperature rise. The results show that the temperature rise of each layer in the deformation process is positively correlated with the reduction rate, but inversely correlated with the initial rolling temperature. The temperature of roll significantly affects the surface temperature drop and the overall temperature rise during rolling, which makes the twin in the surface structure of hot roll decrease obviously, and the recrystallization is more abundant in the rolling plate. In addition, the calculated results of the simplified equation based on the conservation of energy are in good agreement with the measured data.
【作者單位】： 東北大學(xué)材料電磁過程研究教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：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(N120509002,N120309003)
【分類號】：TG339

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