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1 – 1 of 1Kondapalli Siva Prasad, Chalamalasetti Srinivasa Rao and Damera Nageswara Rao
The purpose of this paper is to optimize the fusion zone grain size and hardness using Hooke and Jeeves Algorithm.
Abstract
Purpose
The purpose of this paper is to optimize the fusion zone grain size and hardness using Hooke and Jeeves Algorithm.
Design/methodology/approach
Experiments are conducted as per four factors, five levels response surface method based central composite design matrix. Empirical relations for predicting grain size and harness are developed. The effect of welding variables on grain size and hardness are studies. Grain size and hardness are optimised using Hooke and Jeeves Algorithm.
Findings
The developed empirical relations can be effectively used to predict grain size and hardness values of micro plasma arc welded Inconel 625 sheets. The values of grain size and hardness obtained by Hooke and Jeeves Algorithm matches with experimental values with great accuracy.
Research limitations/implications
The developed mathematical models are valid for 0.25 mm thick Inconel 625 sheets only.
Practical implications
In the present paper only four important factors namely peak current, back current, pulse rate and pulse width are considered, however one may consider other parameters like plasma gas flow rate, shielding gas flow rate, etc.
Originality/value
The present work is very much useful to sheet metal industries manufacturing metal bellows, diaphragms, etc.
Details