Accession Number : ADA191274

Title :   Laser Cladding of Ni, Nb, and Mg Alloys for Improved Environmental Resistance at High Temperature.

Descriptive Note : Annual progress rept. Nov 86-Oct 87,

Corporate Author : ILLINOIS UNIV AT URBANA LASER AIDED MATERIALS PROCESSING LAB

Personal Author(s) : Mazumder, J

PDF Url : ADA191274

Report Date : Oct 1987

Pagination or Media Count : 208

Abstract : This report summarizes experimental and theoretical studies carried out during the period of Nov 1986 to Oct 1987 on laser cladding of Ni and Nb alloys for improved environmental resistance at high temperature. Major emphasis has been on Ni-Cr-Al-Hf system. Microstructural evolution and oxidation properties of these alloys were examined. For Nb alloys microstructural characterization and differential thermal analysis were carried out. One-dimensional diffusion model for finite domain to examine the extended solid solubility in laser cladding was also developed.

Descriptors :   *MAGNESIUM ALLOYS, *NICKEL ALLOYS, *NIOBIUM ALLOYS, *X RAY SPECTROSCOPY, *ENVIRONMENTAL TESTS, ALUMINUM, CHROMIUM, CLADDING, DIFFERENTIAL THERMAL ANALYSIS, DIFFUSION, EXPERIMENTAL DATA, HAFNIUM, LASERS, MICROSTRUCTURE, NICKEL, ONE DIMENSIONAL, OXIDATION, SOLUBILITY, INTERFACES, PHASE TRANSFORMATIONS, MARTENSITE, EUTECTICS, MATHEMATICAL MODELS

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE