A study of the methods for measuring m and n values of superplastic materials

✍ Scribed by Xing Huilin; Z.R. Wang

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 306 KB
• Volume: 41
• Category: Article
• ISSN: 0924-0136
• DOI: 10.1016/0924-0136(94)90004-3

✦ Synopsis

Since conventional superplastic materials have the character of both strain-rate strengthening and strain hardening, the 3-section method, the 2-jump method and 1-jump method for measuring the m and n values of superplastic materials are suggested in this paper, and the optimization of the specimen size of the 3-section method is explored. In addition, the m and n values of A1-Li alloy have been obtained using the above methods and compared with the values obtained using existing methods, good agreement being observed.