PROCESS DEVELOPMENT FOR DEFORMED METASTABLE AUSTENITIC ULTRAHIGH-STRENGTH STEEL
Abstract
Preliminary trials were conducted to establish suitable hot-cold forging procedures for D6AC, 300 M, H-11, 4340, HP 9-4, and AM 355 steels. Closed step dies are employed to produce a part having reduction levels of approximately 20, 40, and 60%. After suitable heating and forging procedures are established, screening studies will be conducted to determine the response of the six steels to hot-cold working. Minor difficulties were encountered in maintaining die temperatures above 600 F and in removing the forgings from the die. In addition, filling of the die was incomplete, even though the maximum forging pressure of 700 tons was employed. This resulted in reduction levels slightly lower than desired. Attempts are being made to alleviate these difficulties by improving the die heating arrangement, modifying the die design, and improving lubrication.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1963
- Accession Number
- AD0407441
Entities
People
- A. M. Sabroff
- C. W. Marschall
- Francis W. Boulger
- J. H. Gehrke
Organizations
- Battelle Memorial Institute