The effect of machining on surface integrity of titanium alloy Ti-6% Al-4% v

Research output: Contribution to journalArticle

301 Citations (Scopus)

Abstract

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 mm. 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 μm) 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 μm) stipulated by ISO for rough machining.

Original languageEnglish
Pages (from-to)188-192
Number of pages5
JournalJournal of Materials Processing Technology
Volume166
Issue number2
DOIs
Publication statusPublished - 1 Aug 2005

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Titanium alloys
Machining
Microhardness
Surface roughness
Experiments
Carbide cutting tools
Microstructure
Machinability
Strain hardening
Electron microscopes
Scanning

Keywords

  • Carbide tool
  • Surface integrity
  • Titanium alloy

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

The effect of machining on surface integrity of titanium alloy Ti-6% Al-4% v. / Che Haron, Che Hassan; Jawaid, A.

In: Journal of Materials Processing Technology, Vol. 166, No. 2, 01.08.2005, p. 188-192.

Research output: Contribution to journalArticle

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N2 - 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 mm. 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 μm) 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 μm) stipulated by ISO for rough machining.

AB - 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 mm. 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 μm) 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 μm) stipulated by ISO for rough machining.

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