The effect of machining on surface integrity of titanium alloy Ti-6% Al-4% V
The effect of machining on surface integrity of titanium alloy Ti-6% Al-4% V
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DOI：
10.1016/j.jmatprotec.2004.08.012
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发表时间：
2005-08-01
影响因子：
6.3
通讯作者：
Jawaid, A
中科院分区：
文献类型：
--
作者：
Che-Haron, CH;Jawaid, A
本文研究了未涂层硬质合金刀具粗加工Ti-6% Al-4% V钛合金的表面完整性。试验是在干切削条件下进行的。实验中选择的切削速度为100、75、60和45 m min（-1）。切削深度保持恒定在2.0转。实验中使用的进料速率为0.35和0.25 mm rev（-1）。在实验中使用了两种类型的插入物。在一定的切削速度、进给量和切削深度范围内，采用扫描电子显微镜对加工表面的表面粗糙度、显微硬度和加工硬化进行了测量。钛合金的可加工性差，在机械加工过程中易发生表面损伤。在加工表面的顶部白色层（< 10 μ m）上，加工表面经历了显微组织的改变和显微硬度的增加。当用钝刀具加工时，观察到严重的显微组织改变。此外，所获得的表面粗糙度值在ISO规定的粗加工极限（< 6 μ m）内。(c)2004 Elsevier B. V.保留所有权利。
This paper gives the investigation on surface integrity of rough machining of titanium alloy Ti-6% Al-4% V with uncoated carbide cutting tools. The experiments were carried out under dry cutting conditions. The cutting speeds selected in the experiment were 100, 75, 60 and 45 m min(-1). The depth of cut was kept constant at 2.0 turn. The feed rates used in the experiment were 0.35 and 0.25 mm rev(-1). Two types of insert were used in the experiments. For a range of cutting speeds, feeds, and depths of cut, measurements of surface roughness of machined surface, microhardness and work hardening backed up with scanning electron microscope were taken. The surface of titanium alloy is easily damaged during machining operations due to their poor machinability. The machined surface experienced microstructure alteration and increment in microhardness on the top white layer (< 10 mu m) of the machined surface. Severe microstructure alteration was observed when machining with the dull tool. In addition, surface roughness values obtained were within the limit (< 6 mu m) stipulated by ISO for rough machining. (c) 2004 Elsevier B.V. All rights reserved.