Variation of the yield point with temperature in AuCu3

✍ Scribed by G.L. Kuczynski; M. Doyama

• Publisher: Elsevier Science
• Year: 1955
• Weight: 105 KB
• Volume: 3
• Category: Article
• ISSN: 0001-6160
• DOI: 10.1016/0001-6160(55)90052-3

✦ Synopsis

EDITOR 415

ruptly at the beads and would fracture there at somewhat lower stresses than those needed to break the whisker near its center.

The maximum fracture stress found so far for silicon was 390 kg/mm2, which is 2.03% of the Young's Modulus for the (111) direction5 (19.22X103 kg/mm2).t6 This result is based on the assumption of a circular cross section. If the whiskers are not nearly round, far more variation in apparent diameter would be expected along the observed length. At any rate, the cross section would almost certainly be smaller than that calculated assuming a circle, and our derived fracture stress would still be conservative.

No necking down of a whisker has ever been observed. Although no accurate measurements of tensile strain have so far been made (due to the relatively short lengths of the whiskers tested so far), it could easily be seen that the maximum strains obtained were not over 3 per cent.