JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

The prime objective of the course is to make the students understand various

superalloys applied in nuclear, aerospace and space Industries.

Course outcomes: Acquiring knowledge on the course,

• The student will be able to select demonstrate the physical metallurgy and properties of super alloys
• To understand the manufacturing and behaviour of the alloys at elevated temperatures.
• Gain the required knowledge for selecting the superalloys for specific applications

UNIT - I

Introduction to superalloys, Guide to selection of superalloys, wrought superalloys, Heat Resistant alloys. Physical Metallurgy; Microstructure of wrought Heat-Resisting Alloys, Microstructure of Ni-base & Co-base heat-resistant casting alloys. temperature and time-dependent transformation. Application to heat treatment of high temperature alloys.

UNIT - II

Relationship of properties to Microstructure in superalloys. Fracture properties of superalloys. High temperature corrosion and use of castings for protection. Effect of Physical Metallurgy and process variables on the microstructure of wrought superalloys. Process and Metallurgical factors affecting on superalloys and other high temperature materials.

UNIT - III

Melting Process; Melting of Superalloys; Principles and practices of vacuum Induction Melting and Vacuum Arc melting

UNIT - IV

Forming Methods; Forming and Fabrication of superalloys; Recent developments in P/M of superalloys- Production of components by Hot-Isostatic Pressing

UNIT - V

Casting methods - Improving turbine blade performance by solidification control -the development of single crystal turbine blades. Quality of super alloy castings; Heat Treating of Heat resistant alloys

TEXT BOOKS:

• 1. Superalloys; Source book; Mathew J. Donachie. Jr. editor; 1984.
• 2. The superalloys; edited by Chester T. Sims and William C Haagel; 1972

REFERENCE BOOKS:

• 1. Campbell IE High temperature MATERIALS, John Wiley and sons Inc.; 1956
• 2. The superalloys: fundamentals and applications By Roger C. Reed
• 3. Superalloys: a technical guide - Elihu F. Bradley-1988-280 pages
• 4. Superalloys A Technical Guide, Methew J. Donachie, Stephen J. Donachie