本文選題：CGO硅鋼 + 應(yīng)變速率　； 參考：《材料熱處理學(xué)報(bào)》2015年S2期

【摘要】：使用Thermal-Calc計(jì)算了3%Si CGO硅鋼的熱力學(xué)相圖,使用DIL805A熱膨脹儀測(cè)量了實(shí)驗(yàn)鋼的靜態(tài)CCT曲線。使用Gleeble 3500進(jìn)行不同應(yīng)變速率的熱變形實(shí)驗(yàn),并使用OM和EBSD研究了應(yīng)變速率對(duì)兩相區(qū)變形織構(gòu)的影響規(guī)律。結(jié)果表明,在熱力學(xué)相圖中,3%Si的電工鋼在1200℃仍處于"奧氏體-鐵素體"兩相區(qū),在750℃時(shí)發(fā)生"奧氏體-鐵素體"相向"鐵素體-珠光體"相轉(zhuǎn)變。根據(jù)靜態(tài)相變點(diǎn)確定3%Si電工鋼的熱軋是兩相區(qū)軋制。隨應(yīng)變速率下降,熱軋退火晶粒的晶粒尺寸不斷變大。應(yīng)變速率對(duì)3%Si CGO兩相區(qū)變形產(chǎn)生的織構(gòu)有影響,{111}110織構(gòu)組分隨著應(yīng)變速率的降低先增加后減少。{100}面織構(gòu)是較強(qiáng)的織構(gòu)組分。隨應(yīng)變速率降低,旋轉(zhuǎn)立方{100}011織構(gòu)含量較穩(wěn)定但略有下降。立方{100}001取向晶粒在應(yīng)變速率較高的試樣中保持了纖維狀分布,在應(yīng)變速率低的試樣中呈現(xiàn)等軸晶狀,立方{100}001織構(gòu)在應(yīng)變速率較高的試樣中含量較高。黃銅型取向晶粒在高應(yīng)變速率條件下數(shù)量極少,在低應(yīng)變速率條件下數(shù)量不多但晶粒尺寸較大。
[Abstract]:The thermodynamic phase diagram of 3%Si CGO silicon steel was calculated by Thermal-Calc and the static CCT curve of experimental steel was measured by DIL805A thermal expansion instrument. Thermal deformation experiments at different strain rates were carried out with Gleeble 3500. The effect of strain rate on deformation texture in two-phase region was studied by OM and EBSD. The results show that the electrical steel with Si in the thermodynamic phase diagram is still in the "austenitic ferrite" two-phase region at 1200 鈩，

本文編號(hào)：1986780