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Experimental and Simulation Analysis of Thermal Shock with Rapid Heating Followed by Water Quenching for CuW70 Alloys
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Experimental and Simulation Analysis of Thermal Shock with Rapid Heating Followed by Water Quenching for CuW70 Alloys
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The Key Program of National Natural Science Foundation of China (50834003); the National Natural Science Foundation of China (50871085)

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    摘要:

    通過銅鎢合金在快速加熱后水冷的熱沖擊實驗，研究了材料在熱沖擊后的力學(xué)性能變化。另外，應(yīng)用有限元方法分析了合金在熱沖擊過程中的溫度及熱應(yīng)力的分布及變化。結(jié)果表明，隨著熱沖擊次數(shù)的增加，材料的強(qiáng)度減小而韌性明顯增加；熱沖擊中，最大熱應(yīng)力出現(xiàn)在加熱及冷卻階段的開始時刻，多次熱沖擊過程中，材料的內(nèi)部和外部承受著在拉應(yīng)力與壓應(yīng)力之間相互轉(zhuǎn)換的交變 載荷。

    Abstract:

    By means of the rapid heating followed by water quenching, thermal shock experiments were conducted for CuW70 alloys to study the variations of mechanical behaviour. On the other hand, the simulation with finite element method was implemented to analyze the variations and the distributions of the temperature and the thermal stresses of CuW70 specimens during thermal shock process. The results show that the strength of CuW70 alloys degenerates and the ductility is improved after repeated thermal shock, and the maximum thermal stress appears at the beginning of heating and quenching period. The alternated thermal stresses which vary between tensile and compression stress will be applied on the internal and the external of CuW70 alloys during repeated thermal shock.

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王彥龍,梁淑華,肖 鵬,鄒軍濤. Experimental and Simulation Analysis of Thermal Shock with Rapid Heating Followed by Water Quenching for CuW70 Alloys[J].稀有金屬材料與工程,2012,41(3):393~396.[Wang Yanlong, Liang Shuhua, Xiao Peng, Zou Juntao. Experimental and Simulation Analysis of Thermal Shock with Rapid Heating Followed by Water Quenching for CuW70 Alloys[J]. Rare Metal Materials and Engineering,2012,41(3):393~396.]
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  • 收稿日期:2011-05-12
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