本文選題：鐵基非晶 + 非晶形成能力��； 參考：《沈陽工業(yè)大學(xué)》2017年碩士論文

【摘要】：隨著能源的急劇消耗,研究者們開發(fā)了一種新型材料—鐵基非晶。這種合金具有優(yōu)異的軟磁性能、力學(xué)性能和低廉的價格,廣泛的應(yīng)用于電機(jī)、變壓器、電抗器、電感線圈等方面,成為一種新型的結(jié)構(gòu)與功能材料。然而,鐵基非晶存在的不足就是條帶退火后出現(xiàn)脆化。因此研究成分、退火對條帶磁性跟韌脆性的影響具有重要的意義。本文主要研究了Fe_(78)Si_9B_(13)、Fe_(83)C_1B_(11)Si_2P_3兩種合金條帶在不同退火時間、退火溫度下的磁性和韌脆性,并且得出了條帶最佳的熱處理狀態(tài)。由于條帶韌脆性跟泊松比、原子之間的不匹配度以及原子之間的鍵有關(guān),鐵含量的變化會引起這三者的變化,以Fe_(83-x)(C_1B_(11)Si_2P_3)_((1+x/17))(x=0,3,6,9和12)合金體系為研究對象,研究其非晶形成能力、熱穩(wěn)定性、晶化激活能、析出相、磁性以及韌脆性�？紤]到Fe_(83)C_1B_(11)Si_2P_3的居里溫度比Fe_(78)Si_9B_(13)居里溫度低很多,以及Ni元素的泊松比比Fe元素的泊松比大,為了驗證低的居里溫度是否有利于條帶的韌脆性,繼續(xù)研究(Fe_((1-x))Ni_x)_(78)Si_4B_(13)P_5(x=0,0.2,0.4,0.6,0.8)合金體系,包括非晶形成能力、熱穩(wěn)定性、磁性以及韌脆性。研究發(fā)現(xiàn),Fe_(78)Si_9B_(13)在713K及以上溫度退火時,短時間內(nèi)就能夠改善矯頑力,而Fe_(83)C_1B_(11)Si_2P_3在633K退火時,退火10min才能明顯降低矯頑力。另外對于Fe_(83-x)(C_1B_(11)Si_2P_3)_((1+x/17)),鐵含量為83at.%的合金條帶在最佳退火前后都具有良好的彎曲韌性,然而,當(dāng)合金條帶的鐵含量為71at.%,條帶淬態(tài)就表現(xiàn)出脆性特征。帶材的韌脆轉(zhuǎn)變溫度比隨鐵含量增加最佳軟磁性能對應(yīng)溫度降低的更快,另外,隨鐵含量的增加最佳退火溫度向低溫移動。(Fe_((1-x))Ni_x)_(78)Si_4B_(13)P_5的研究證實(shí)了低的居里溫度不是影響條帶韌脆性的主要因素,我們發(fā)現(xiàn)當(dāng)變量x的值為0.8時,條帶為順磁性,矯頑力較大。
[Abstract]:With the rapid consumption of energy, researchers have developed a new material-iron-based amorphous. The alloy has excellent soft magnetic properties, mechanical properties and low price. It is widely used in motor, transformer, reactor, inductor coil and so on. It has become a new type of structure and function material. However, the defect of Fe-based amorphous is the embrittlement after annealing. Therefore, it is of great significance to study the effects of composition and annealing on the magnetic properties and ductile brittleness of the strip. In this paper, the magnetic properties and ductile brittleness of FeD / 78Si9B / C / C _ 1B / C _ 1B / C _ 1B / C _ 1 / C _ 1B _ 1 / C _ 1C _ 1 / C _ 1 / C _ 1 / C _ 1B _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C / C _ (11) Si / P _ 3 alloy strips at different annealing temperatures and ductile brittleness are studied. Because the ductile brittleness of the strip is related to Poisson's ratio, the mismatch between atoms and the bond between atoms, the change of iron content will lead to the change of these three. The amorphous forming ability of the FeStue 83-xDX C _ 1B / T _ 1B _ (1) P _ (1) / T _ (3) P ~ (3 / P) / S _ (1 / 17) / T _ (1 / 17) / T _ (39) / 12) alloy system is studied. The results show that the structure of the band-ductile-brittle strip is related to the Poisson ratio, the mismatch between atoms and the bond between atoms. Thermal stability, crystallization activation energy, precipitates, magnetism and ductile brittleness. In view of the fact that the Curie temperature of the Serge C1Si2P3 is much lower than the Curie temperature of Feti78Si9BP3, and that the Poisson's ratio of Ni is larger than that of Fe, and that, in order to verify whether a low Curie temperature is conducive to the brittleness of the strip, to continue the study of the NixSerg / NixT / NixS / 78BSP / Si _ 4BS _ 3P _ _ _ It includes amorphous forming ability, thermal stability, magnetism and ductile brittleness. It is found that at 713K and above, the coercivity can be improved in a short period of time, while the 10min can reduce the coercivity obviously only when the Fetit _ (83) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1) C _ (1). In addition, the alloy strip containing 83at.% iron has good flexural toughness before and after the optimum annealing. However, when the iron content of the alloy strip is 71at.1.When the iron content of the alloy strip is 71at.1.The strip quench shows brittleness characteristic when the iron content of the alloy strip is 71at.1.In addition, when the iron content of the alloy strip is 71at.Without, the alloy strip with 83at.percent iron content has a good flexural toughness before and after the best annealing. The ductile-brittle transition temperature of the strip decreases faster than the corresponding temperature of the optimum soft magnetic properties with the increase of iron content. With the increase of iron content, the optimum annealing temperature moves to low temperature. The study of NixAK / T _ (78) Si4B / T _ (13) P _ (5) confirms that low Curie temperature is not the main factor affecting the ductile brittleness of the strip. It is found that when the variable x is 0.8, the strip is paramagnetic, and the coercivity is greater.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG139.8

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