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Research on Rare Earth Modification and Cutting Mechanism of Die-Cast Magnesium Alloy AZ91

Author: WangJun
Tutor: LiuYongBing
School: Jilin University
Course: Materials Science
Keywords: Die - cast magnesium alloy Rare earths Microstructure High-temperature performance Processing performance Axial force Torque Tool wear Wear Mechanism Map Safety zone
CLC: TG136.1
Type: PhD thesis
Year: 2005
Downloads: 487
Quote: 5
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Abstract


Magnesium alloy for light weight and advantages become the best material to make the car lighter , the recent research focus . Successfully prepared die-cast magnesium alloy rare earth addition , the study of rare earth elements on the microstructure and mechanical properties ; , and die-cast magnesium alloy drilling performance test , the empirical formula of drilling force , high-speed steel cutting tools, drilling magnesium alloy when the wear mechanism of FIG. The study showed that: rare earth detailed die-cast magnesium alloy , the room temperature mechanical properties is not obvious , but significantly improve the high temperature mechanical properties of magnesium alloys . By the measured object , bidirectional piezoelectric dynamic drilling dynamometer, charge amplifier , data acquisition card , computer Drilling force testing system . VC language test system software , according to the empirical formula of the axial force and torque tested drilling axial force and torque values ??. Wear mechanism maps constructed drilling die-cast magnesium alloy , according to the analysis , the test drilling parameters drilling die-cast magnesium alloy , high-speed steel cutting tools appear three wear mechanisms : adhesive wear , abrasive wear and diffusion wear . Minimum tool wear area - safe area . Increase the amount of the magnesium alloy Rare Earth in fixed drilling parameters , drilling axial force and tool wear .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > The alloy learn with a variety of properties of alloys > Special arts and crafts nature of the alloy > Casting alloys
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