摘要
采用倾斜管过流冷却-转移法生产半固态流变压铸件,研究了压铸工艺对ZL101铝合金半固态流变压铸件性能的影响,以及半固态压铸件经T6热处理之后性能的改变。对比研究了液态与半固态压铸件的力学性能。结果表明,在浇注温度为595℃、压射速度为1.8m/s时,压铸件性能最佳,此时较浇注温度为630℃的液态压铸件的抗拉强度提高了11%。经热处理的半固态压铸件抗拉强度与伸长率都得到改善。液态与半固态压铸件试样的拉伸断口为准解理断裂,经热处理的半固态压铸件试样的拉伸断口为韧性断裂。
Die casting semi-solid ZL101 alloy prepared by inclined slope cooling-transferring method was conducted. Effects of processing parameters on properties of semi-solid rheoforming ZL101 alloy die castings were investigated,and the change of properties of the semi-solid die casting ZL101 parts after T6 heat treatment was analyzed. Mechanical properties of semi-solid die casting parts were comparatively analyzed with those of conventional die casting parts. The results reveal that,the semi-solid die casting parts exhibit desirable mechanical properties with pouring at 595 ℃ and injecting at 1.8 m/s,and the elongation is increased by 11% compared with that of conventional die casting parts at 630℃. Tensile strength and elongation of the semi-solid die casting parts after heat treatment are greatly improved. The fracture mechanism of both conventional die casting parts and semi-solid die casting parts are characterized by quasi-cleavage fracture,while semi-solid die casting parts after heat treatment are characterized by ductile fracture.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2011年第10期907-910,共4页
Special Casting & Nonferrous Alloys
基金
云南省科技条件平台建设计划项目(2010DH025)
云南省自然科学基金资助项目(2004E0018M
2005E0013Q)
云南省中青年学术和技术带头人后备人才培养基金资助项目(2009CI024)
