摘要
镁合金由于其具有良好的生物力学相容性、力学性能和可降解性,在医用领域呈现出较广泛的应用前景。本文主要研究了在AZ31镁合金细管的制备过程中,挤压工艺对其组织及性能的影响。研究结果表明:在模具温度为200℃,坯料温度为200℃,挤压比18.68时,所得细管组织最为均匀细小,壁差率最低为3.4%,同时抗拉强度达303.540 MPa;当挤压比为18.68,坯料温度为200℃时,管材晶粒为3.0μm,组织最为均匀细小,最大伸长率可达9.4%。
Magnesium alloy has significant application prospect in medical field due to its good biomechanical compatibility and mechanical properties as well as biodegradable characteristics. The influence of extrusion process on microstructure and properties researched during the production of the AZ31 magnesium alloy thin tube. The results show that the grains become fine and homogeneous when the mold temperature is 200 ℃ , billet temperature is 200 and the extrusion ratio is 18.68 with the minimum wall rate distribution 3.4% as well as the tensile strength reaches 303. 540 MPa;the grain of the tube is 3.0 μm and homogeneous with the highest elongation of 9.4% when the extrusion ratio is 18.68 and the billet temperature is 200 ℃.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2015年第3期208-212,共5页
Powder Metallurgy Technology
基金
航天科技创新基金(pb(s)-2014-4)
关键词
AZ31镁合金
细管
组织性能
挤压比
壁差率
AZ31 magnesium alloy
thin wall tube
microstructure and properties
extrusion ratio
wall rate distribution
