摘要
以Al-22Si-3Fe合金为基体,通过添加Mn、P和改变冷却速度的方式研究了合金的组织、强度、硬度的变化。结果表明:当加入0.045wt%P、Mn/Fe=0.6时合金的抗拉强度最高,可达142.1 MPa,Mn/Fe比值过大或过少都会导致抗拉强度下降;随着冷却速度的增大,合金硬度也增大,当冷却速度较大时,硬度能达到91.80 HB。
Taking Al-22Si-3Fe alloy as matrix,the changes of the microstructure, strength and hardness were studied by adding Mn and P elements and changing the cooling speed. The results show that when adding 0.045wt%P and Mn/Fe= 0.6,the tensile strength of the alloy is the maximum,and it can reach 142.1MPa. Too large or too small Mn/Fe ratio can lead to the decrease of the tensile strength. With the increment of cooling speed, the hardness of the alloy also increases. When the cooling rate is bigger, the hardness can achieve 91.80 HB.
出处
《热加工工艺》
CSCD
北大核心
2016年第1期79-81,85,共4页
Hot Working Technology
