在變形溫度為300～450℃、應(yīng)變速率為0.01～1 s^-1的條件下進(jìn)行熱壓縮試驗,對Mg-5Y-0.5Ce-0.5Zr鎂合金的熱變形行為進(jìn)行了研究。結(jié)果表明,在熱壓縮變形過程中,該合金的流變應(yīng)力隨著變形溫度和應(yīng)變速率的變化而變化。在同一應(yīng)變速率下,流變應(yīng)力隨著變形溫度的增高而降低;在同一變形溫度下,流變應(yīng)力隨著應(yīng)變速率的減小而減小。該合金熱壓縮流變應(yīng)力的本構(gòu)方程可采用雙曲正弦形式構(gòu)建,熱變形激活能Q為253 kJ/mol。 

【文章頁數(shù)】：5 頁

【文章目錄】：
1 Experiment
2 Results and Discussion
    2.1 Flow stress
    2.2 Microstructure evolution
    2.3 Constitutive equation
3 Conclusions


【參考文獻(xiàn)】：
期刊論文
[1]Effects of Sm addition on microstructure and mechanical properties of a Mg-10Y alloy[J]. Li Quanan,Zhang Qing,Wang Yaogui,Zhou Wei.  China Foundry. 2014(01)
[2]Microstructure and mechanical properties of Mg-10Y-2.5Sm alloy[J]. 張清,李全安,井曉天,張興淵.  Journal of Rare Earths. 2010(S1)
[3]Hot compression deformation behavior of the Mg-Al-Y-Zn magnesium alloy[J]. FANG Xiya YI Danqing WANG Bin WU Chunping ZHANG Hong School of Materials Science and Engineering,Central South University,Changsha 410083,China.  Rare Metals. 2008(02)



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