J.C. Wang
,
Z.M. Zhang
,
Y.L. Lu
,
G.S. Song and G.C. Yang (State Key Laboratory of Solidification Processing
,
Northwestern Polytechnical University
,
Xi'an 710072
,
China)
金属学报(英文版)
To improve the damping capacities of metals and alloys, the microstructures and damping capacities of ZA27 alloy modified by Zr were studied, and the damping capacities at room tempemture were measured by using cantilever beam techniques. The experiment results show that Zr can refine the Al-rich pr...
关键词:
ZA27 alloy
,
null
,
null
,
null
Tijun CHEN
,
Yuan HAO
,
Jun SUN
材料科学技术（英文）
The investigations were performed into the formation processes of liquid pools entrapped within solid grains of three ZA27 alloys, produced respectively by either grain refinement, or traditional permanent casting or mechanical stirring, during partial remelting at semisolid temperature of 460°C. Th...
关键词:
Thixoforming
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null
,
null
,
null
null
,
null
,
null
,
null
金属学报(英文版)
ZA27 alloy was prepared by casting with permanent mold and then annealed at 250℃ for 1-4h. The damping capacity of the alloy was measured using a testing apparatus based on the cantilever beam technique. It was found that the as-cast ZA27 alloy possesses high damping capacity with the value of 1.3 ×...
关键词:
damping capacity
,
null
,
null
李红英
,
刘洋
,
胡继东
,
武岳
材料热处理学报
采用扫描电镜（SEM）、X射线衍射（XRD）和力学性能测试等手段研究了固溶处理对ZA27合金组织和性能的影响。在300～380℃范围,合金经不同温度固溶处理1 h,水淬后进行相同的时效（160℃×8 h）处理。分析了在不同温度固溶处理的淬火态和时效态合金的显微组织及力学性能。结果表明,在365℃固溶...
关键词:
ZA27合金
,
固溶温度
,
组织
,
性能
,
析出相
刘占勇
,
左孝青
,
钟子龙
,
李威威
材料工程
doi:10.11868/j.issn.1001-4381.2015.000920
通过与常规铸造方法的比较,研究半固态触变挤压对ZA27合金变质、热处理组织和力学性能的影响.结果表明:半固态挤压态合金的密度较铸态合金提高了3%,合金经Sc变质或者半固态挤压都获得了细小而均匀的近似球状组织,而Sc变质结合半固态挤压的球状组织具有最高的圆整度;经T6热处理的半固态挤压合金由细小的初生...
关键词:
ZA27合金
,
Sc变质
,
半固态触变挤压
,
微观组织
,
力学性能
邱谨
,
李元东
,
李明
,
张继渊
,
管仁国
,
陈体军
中国有色金属学报
采用自孕育法制备ZA27半固态浆料,研究流变压铸成形过程中的显微组织及凝固行为.结果表明:ZA27半固态浆料在480℃等温保温3 min,能够制备出细小、圆整、分布均匀的初生α(Al)晶粒,平均晶粒尺寸52.32 μm.浆料在成形过程中发生液相偏析,在受力较大部位,二次颗粒长成“蠕虫状”.剩余液相在...
关键词:
自孕育法
,
二次凝固
,
半固态
,
包晶
,
共晶
,
ZA27合金
