Investigation of Solidification of High Strength Steel.
Abstract
The effects of high temperature homogenization on sulfide inclusions were studied in unidirectionally solidified low alloy steel ingots containing Type II, Type III, and a mixed Type II-III sulfide inclusions. Specimens were taken at various distances from the chill and were heat-treated at 1315C (2400F) in vacuum and homogenized for various times between 20 and 100 hrs. Type II and mixed Type II-III sulfide inclusions coalesced to compact polyhedral shapes during homogenization. These more compact shpaes should be much less deleterious to mechanical properties than the original Type II and II-III inclusions. Microporosity was studied in unidrectionally solidified low alloy steel using X-ray microradiography and optical metallography. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1972
- Accession Number
- AD0742657
Entities
People
- D. S. Gnanamuthu
- M. Basaran
- Merton C. Flemings
- R. Mehrabian
- T. Z. Kattamis
Organizations
- Massachusetts Institute of Technology