本文關(guān)鍵詞：熱機(jī)械訓(xùn)練過程中Fe-Mn-Si系形狀記憶合金的組織演變　出處：《材料工程》2015年04期 　論文類型：期刊論文

  更多相關(guān)文章： Fe-Mn-Si系記憶合金 熱機(jī)械訓(xùn)練 組織演變 馬氏體

【摘要】：采用金相、XRD、SEM和TEM等對Fe-Mn-Si系形狀記憶合金在熱機(jī)械訓(xùn)練過程中組織的演變進(jìn)行研究。結(jié)果表明:熱機(jī)械訓(xùn)練是應(yīng)力誘發(fā)γ→ε馬氏體相變及其逆相變過程的重復(fù)。訓(xùn)練前的組織中幾乎不存在馬氏體,訓(xùn)練后合金中應(yīng)力誘發(fā)的ε馬氏體分布比較均勻,相互平行,交叉現(xiàn)象較少。同時,晶體中的馬氏體呈現(xiàn)ε馬氏體區(qū)域擇優(yōu)取向,過多(5次以上)訓(xùn)練后,合金基體內(nèi)部形成大量位錯纏結(jié)。
[Abstract]:The microstructure evolution of shape memory alloy (SMA) of Fe-Mn-Si system during thermal mechanical training was studied by means of metallographic X-ray scanning electron microscopy (SEM) and TEM. The results show that thermal mechanical training is stress-induced 緯. 鈫扵he repeat of 蔚 martensite transformation and its inverse transformation process. There is almost no martensite in the microstructure before training, and the stress induced 蔚 martensite distribution in the alloy after training is relatively uniform, parallel to each other, and the cross phenomenon is less. The martensite in the crystal shows the preferred orientation of 蔚 martensite region, and after more than 5 times of training, a large number of dislocation entanglement are formed in the matrix of the alloy.
【作者單位】： 同濟(jì)大學(xué)材料科學(xué)與工程學(xué)院;西南交通大學(xué)牽引動力國家重點實驗室;
【分類號】：TG139.6
【正文快照】： LU Qi 1,HE Guo-qiu1,CHEN Shu-juan1,SHE Meng1,LIU Yang1,YANG Yang1,ZHU Min-hao2(1College of Materials Science and Engineering,Tongji University,Shanghai 201804,China;2State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,Chin

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本文編號：1434207