Effects of cutter path orientations on milling force, temperature, and surface integrity when ball end milling of TC17 alloy
Effects of cutter path orientations on milling force, temperature, and surface integrity when ball end milling of TC17 alloy
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TC17 合金球头铣削时刀具路径方向对铣削力、温度和表面完整性的影响
DOI：
10.1177/0954405420971070
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发表时间：
2020-11
期刊：
影响因子：
2.6
通讯作者：
Liang Tan
中科院分区：
文献类型：
--
作者：
Xuehong Shen;Dinghua Zhang;Liang Tan
为研究刀具路径方向对铣削力、温度和表面完整性的影响，对TC 17钛合金进行了不同刀具路径方向的端铣试验。获得了铣削力和铣削温度的实验结果。结合热-力耦合，分析了刀具路径方向对表面粗糙度、表面形貌、深度残余应力、显微硬度分布和显微组织的影响。结果表明：垂直向下铣削路径下的最大铣削力为224.24 N，最大铣削温度为672°C;水平向下铣削路径下的最小铣削力为81.12 N，最小铣削温度为493°C。四种刀轨方向的表面形貌均为盆状，在垂直向上模式下获得的最小表面粗糙度为1.128 µm。垂直向下铣削时，最大残余压应力为-491.8 MPa，最大残余应力层深度为45 µm。在垂直路径下，材料的显微硬度最高可达390 HV 0.025，材料的显微组织转变为拉伸、弯曲和断裂。在垂直向下铣削路径下，最大塑性变形层深度为44 µm。
To explore the effects of cutter path orientations on milling force, temperature, and surface integrity, end ball milling experiments of TC17 titanium alloy were accomplished derived from different cutter path orientations. The experiment results of milling force and temperature were obtained. Combining with the thermo-mechanical coupling, this paper analyzes the impact of the cutter path orientations on the surface roughness, surface topography, in-depth residual stress, microhardness distributions, and microstructure. The results indicate that the maximum milling force is 224.24 N and the temperature is 672°C under vertical downward milling path, while horizontal downward orientation provides the lowest cutting force of 81.12 N and temperature of 493°C. The surface topography of the four cutter path orientations is basin-like shape, and the minimum surface roughness of 1.128 µm is achieved under vertical upward mode. Moreover, the maximum compressive residual stress of −491.8 MPa and the maximum residual stress layer depth of 45 µm are acquired under vertical downward milling. The maximum microhardness can arrive at 390 HV0.025 under the vertical path. Additionally, the transformation of the material microstructure remains elongated, bent, and fractured. The maximum plastic deformation layer depth is 44 µm under vertical downward milling path.
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