本文選題：高熵合金　切入點：退火　出處：《鍛壓技術(shù)》2017年07期 　論文類型：期刊論文

【摘要】：利用真空電弧熔煉法制備了AlFeCrCoNiMo高熵合金。用X射線衍射(XRD)、掃描電鏡(SEM)、硬度儀,研究了退火對高熵合金的微觀組織及硬度的影響。結(jié)果表明:鑄態(tài)以及退火后的合金是樹枝晶結(jié)構(gòu),枝晶間是由Cr_9Mo_(21)Ni_(20)和NiCoCr金屬間化合物組成的共晶結(jié)構(gòu);隨著退火溫度的升高,FCC相逐漸減少,并會析出新的金屬間化合物;合金的微觀應(yīng)力表現(xiàn)出先增大后減少的變化趨勢;合金的硬度隨著退火溫度的升高先升高再降低,合金的應(yīng)力與硬度的變化趨勢一致,當退火溫度達到800℃時,合金的硬度達到最大。
[Abstract]:The high entropy AlFeCrCoNiMo alloy was prepared by vacuum arc melting. The effect of annealing on the microstructure and hardness of high entropy alloy is studied. The results show that the as-cast and annealed alloys are dendritic, and the dendritic interdendrites are eutectic structures composed of Cr9MoS-1 / NiS20) and NiCoCr intermetallic compounds. With the increase of annealing temperature, the FCC phase decreases gradually, and new intermetallic compounds are precipitated. The microstructure stress of the alloy increases first and then decreases, and the hardness of the alloy increases first and then decreases with the increase of annealing temperature. The stress of the alloy is consistent with the change of hardness. When the annealing temperature reaches 800 鈩，

本文編號：1563686