LOW-CYCLE FATIGUE BEHAVIOR OF BLANKET STRUCTURAL-MATERIALS

被引：8

作者：

NAGATA, N

FURUYA, K

WATANABE, R

机构：

[1] National Research Institute for Metals, Meguro-ku, Tokyo, 153, Nakameguro

来源：

JOURNAL OF NUCLEAR MATERIALS | 1979年 / 85-6卷 / DEC期

关键词：

D O I：

10.1016/0022-3115(79)90364-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low cycle fatigue behavior of 316 austenitic stainless steel, niobium, Nb-1Zr and sintered molybdenum, candidate materials for the first wall and blanket structural components of fusion reactors, was investigated. Fatigue tests were conducted in a vacuum in the temperature range from 298 K to 1273 K. All the materials tested obeyed the Manson-Coffin relation in the range of cycles to failure from 102 to 105 and the average value of the exponent β turns out to be about 0.5. Temperature dependence of cycles to failure and stress range at a given plastic Strain range was compared. It was found that 316 stainless steel shows a good resistance to strain cycles up to 823 K, while molybdenum and Nb-1Zr hold their strengths up to 1273 K. However, molybdenum fractured In a brittle manner at 298 K. © 1979.

引用

页码：839 / 843

页数：5