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液態(tài)金屬大系統(tǒng)急冷過程中微結(jié)構(gòu)轉(zhuǎn)變機(jī)制的模擬研究
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TG111.4

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國(guó)家自然科學(xué)基金資助項(xiàng)目(59871016)


A Simulation Study on Transition Mechanism of Microstructures during Forming Processes of Amorphous Metals
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    摘要:

    首次對(duì)于由50000個(gè)Al原子組成的液態(tài)金屬系統(tǒng)在由急冷形成非晶態(tài)結(jié)構(gòu)的過程中所出現(xiàn)的微觀結(jié)構(gòu)組織的變化進(jìn)行了分子動(dòng)力學(xué)模擬研究。探討各種有關(guān)鍵型、原子團(tuán)結(jié)構(gòu)組態(tài)的轉(zhuǎn)變機(jī)制，得到一幅十分清晰的關(guān)于金屬原子成團(tuán)及其演變的圖景，同時(shí)也對(duì)模擬計(jì)算結(jié)果的微觀機(jī)理給了相應(yīng)的討論。這對(duì)于深入理解非晶態(tài)結(jié)構(gòu)的形成機(jī)制及其微觀過程，將有重要的啟示作用。

    Abstract:

    A molecular dynamics simulation is carried out for a 50 000-atom system to study the variation of microstructural configuration of liquid metal Al during a rapid cooling process. The transition mechanism is identified by various bond-types and cluster structures. A very clear picture of how metal atoms form clusters and how they evolve further has been obtained, which will give us an important enlightenment to understand the forming mechanism and microscopic process of an amorphous structure.

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鄭采星 謝泉 等.液態(tài)金屬大系統(tǒng)急冷過程中微結(jié)構(gòu)轉(zhuǎn)變機(jī)制的模擬研究[J].稀有金屬材料與工程,2001,(2):89~92.[Zheng Caixing, Liu Rangsu, Dong Kejun, Peng Ping, Liu Hairong, Xu Zhongyu, Xie Quan. A Simulation Study on Transition Mechanism of Microstructures during Forming Processes of Amorphous Metals[J]. Rare Metal Materials and Engineering,2001,(2):89~92.]
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  • 最后修改日期:2000-04-03
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