Book ChapterDOI
Investigation of Process Parameters for Friction Stir Processing (FSP) of Ti-6Al-4V Alloy
Sandip Chougule,Digvijay Sheed,R. K. P. Singh,N. Prabhu,B. P. Kashyap,Kaushal Jha +5 more
- pp 53-64
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TLDR
In this paper, the effect of tool traverse speed and tool rotation speed on microstructure evolution in the stir zone (SZ) of the Ti-6Al-4V alloy was carried out.Abstract:
In the current work friction stir processing of the Ti-6Al-4V alloy was carried out. Various process parameters (tool traverse speed and tool rotation speed) were studied for successful FSP of Ti-6Al-4V. The process parameters were identified using macrostructure observation on the surface of processed plate and microstructure evolution in the stir zone (SZ) of the FSP specimen. The effect of tool traverse speed and tool rotation speed on microstructure evolution in the SZ, thermo-mechanically affected zone (TMAZ) and heat affected zone (HAZ) were studied. The microstructure transformation from initial elongated α structure to prior β grains, with α layer grain boundary consisting of mixture of acicular α′ and very fine lamellar α/β colonies, was observed at SZ. This was the case for wide range of variations in parameters except for the tool rotation speed of 600 rpm and traverse speed of 60 and 100 mm/min. Under this combination of parameters, the bands of DRX α and transformed β structure were observed to evolve at SZ.read more
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Journal ArticleDOI
Friction Stir Processing of Investment-Cast Ti-6Al-4V: Microstructure and Properties
TL;DR: In this article, the authors used a dual-beam focused ion beam device to evaluate the performance of investment-cast Ti-6Al-4V on four-point bend specimens and found that the fine-grained equiaxed structure has about a 12 pct higher compressive yield stress.
Journal ArticleDOI
Identification of Process Parameters for Friction Stir Welding Ti–6Al–4V
P. Edwards,Mamidala Ramulu +1 more
TL;DR: In this paper, an experimental study was conducted to identify acceptable welding parameters for friction stir welding Ti-6Al-4V butt joints, ranging from 3 mm to 12 mm in thickness.
Journal ArticleDOI
Friction Stir Welding of Ti-6Al-4V Alloy
Paola Leo,Emanuela Cerri +1 more
TL;DR: In this paper, the microstructure of the transverse section of joints is not homogeneous and a distorted α/β lamellar micro-structure together with smashed zone of fragmented β layer and β retained grain boundary phase is analyzed.
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