Closed Die Hammer Forging of Inconel 718-Reference-Cited by-同舟云学术

Closed Die Hammer Forging of Inconel 718

Published:2014-12-01 Issue: Volume:2014 Page:1-7
ISSN:1687-9465
Container-title:Journal of Metallurgy
language:en
Short-container-title:Journal of Metallurgy

Author:

Krishna S. Chenna¹,Singh Satish Kumar¹,Murty S. V. S. Narayana¹,Venkata Narayana Ganji²,Jha Abhay K.¹,Pant Bhanu¹,George Koshy M.¹

Affiliation:

1. Materials and Mechanical Entity, Vikram Sarabhai Space Centre, Trivandrum 695 022, India

2. Human Spaceflight Project, Vikram Sarabhai Space Centre, Trivandrum 695 022, India

Abstract

A method for the production of Inconel 718 (IN-718) hemispherical domes by closed die hammer forging is proposed. Different combination of operations employed for production are as follows: (i) preforging + final forging + air cooling, (ii) preforging + final forging + controlled cooling, (iii) direct forging + controlled cooling, and (iv) direct forging + air cooling. Last three combinations yielded a crack free hemispherical dome. The forged hemispherical domes were solution annealed at 980°C for 1 h and air cooled. The grain size of the domes at all locations was finer than ASTM No 4. Mechanical properties of the forged dome in solution treated and aged condition (STA) were better than feedstock used.

Publisher

Hindawi Limited

Link

http://downloads.hindawi.com/archive/2014/972917.pdf

Reference18 articles.

1. A survey of compatibility of materials with high pressure oxygen service

2. Press forging of superalloys

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