Laser-Assisted Machining of Magnesia-Partially-Stabilized Zirconia
Laser-Assisted Machining of Magnesia-Partially-Stabilized Zirconia
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DOI：
10.1115/1.1644542
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发表时间：
2004-02
影响因子：
4
通讯作者：
F. Pfefferkorn;Y. Shin;Yinggang Tian;F. Incropera
中科院分区：
文献类型：
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作者：
F. Pfefferkorn;Y. Shin;Yinggang Tian;F. Incropera
研究了氧化镁部分稳定氧化锆（PSZ）的激光辅助加工（LAM），以确定加热对可加工性的影响，如由刀具磨损、切削能量、表面完整性和材料去除机制所确定的。据发现，PSZ可以成功地加工与多晶立方氮化硼工具，工具寿命增加材料去除温度最高为121分钟。随着温度的升高，比切割能量降低了2.5倍，这也证明了激光辅助材料去除的优势。结果表明，与其他陶瓷的LAM不同，表面粗糙度随刀具磨损而显着变化，对切削温度的依赖性很小。混合脆性和韧性材料去除机制的证据，并建立在测试矩阵的最佳条件。
Laser-assisted machining (LAM) of magnesia-partially-stabilized zirconia (PSZ) is investigated to determine the effect of heating on machinability, as determined by tool wear, cutting energy, surface integrity, and material removal mechanisms. It is found that PSZ can be successfully machined with a polycrystalline cubic boron nitride tool and that tool life increases with material removal temperature up to a maximum of 121 minutes. The benefit of laser-assistance in material removal is also demonstrated by the 2.5 fold decrease in the specific cutting energy with increased temperature. It is shown surface roughness varies significantly with tool wear with little dependence on cutting temperature unlike in LAM of other ceramics. Evidence of mixed brittle and ductile material removal mechanisms is presented, and the optimum condition within the test matrix is established.