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Zafir Alam

Defence Metallurgical Research Laboratory

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Featured researches published by Zafir Alam.

Bulletin of Materials Science | 2014

Microstructure and oxidation performance of a γ - γ ′ Pt-aluminide bond coat on directionally solidified superalloy CM-247LC

Zafir Alam; N. Hazari; Dipak K. Das

The microstructure of a Pt-modified γ-γ′ bond coat on CM-247LC Ni-base superalloy has been examined and its cyclic oxidation performance at 1100 °C in air is comparatively evaluated with that of a conventional β-(Ni, Pt)Al bond coat. The γ-γ′ bond coat was effective in imparting oxidation resistance to the CM-247LC alloy for about 100 h, whereas the β coating imparted oxidation resistance for significantly longer duration of about 1000 h. The nature of surface damage that occurred to the γ-γ′ coating during oxidation has been compared with that reported in the case of β coating.

Acta Materialia | 2013

Tensile behavior of a free-standing Pt-aluminide (PtAl) bond coat

Zafir Alam; S.V. Kamat; Vikram Jayaram; Dipak K. Das

Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2010

Effect of cyclic oxidation on the tensile behavior of directionally solidified CM-247LC Ni-based superalloy at 870 °C

Zafir Alam; D. Chatterjee; B. Venkataraman; Vijay K. Varma; Dipak K. Das

Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2011

Effect of AL3Ti diffusion aluminide coating on tensile properties of a near α-Ti alloy

Chandrakant Parlikar; Zafir Alam; Dipak K. Das

International Journal of Refractory Metals & Hard Materials | 2015

Pressureless sintering of (ZrB2–SiC–B4C) composites with (Y2O3 + Al2O3) additions

R.V. Krishnarao; Zafir Alam; D.K. Das; V.V. Bhanu Prasad; G. Madhusudan Reddy

Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2012

Effect of prior cyclic oxidation on the creep behavior of directionally solidified (DS) CM-247LC alloy

Zafir Alam; D.V.V. Satyanarayana; D. Chatterjee; Rajdeep Sarkar; D.K. Das

Surface & Coatings Technology | 2006

Cyclic oxidation behaviour of aluminide coatings on Ti-base alloy IMI-834 at 750 °C

Dipak K. Das; Zafir Alam

Surface & Coatings Technology | 2013

Effect of oxidation resistant Al3Ti coating on tensile properties of a near α-Ti alloy

Chandrakant Parlikar; Zafir Alam; Rajdeep Sarkar; Dipak K. Das

Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2013

Determination of critical strain for rapid crack growth during tensile deformation in aluminide coated near-α titanium alloy using infrared thermography

Sony Punnose; A.K. Mukhopadhyay; Rajdeep Sarkar; Zafir Alam; Dipak K. Das; Vikas Kumar

Materials & Design | 2017

Comparative tensile behavior of freestanding γ-γ′ and β-(Ni,Pt)Al bond coats and effect on tensile properties of coated superalloy

Zafir Alam; Chandrakant Parlikar; D. Chatterjee; Dipak K. Das

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