FATIGUE PROPERTIES OF TITANIUM-ALLOYS IN LIQUID-HELIUM

被引：3

作者：

ISHIKAWA, K

NAGAI, K

UMEZAWA, O

YURI, T

OGATA, T

机构：

[1] Natl Research Inst for Metals, Ibaraki

来源：

JSME INTERNATIONAL JOURNAL SERIES I-SOLID MECHANICS STRENGTH OF MATERIALS | 1991年 / 34卷 / 03期

关键词：

TITANIUM ALLOYS; LIQUID HELIUM; CRYOGENIC TEMPERATURES; FATIGUE; FATIGUE CRACK INITIATION EXTREME STRENGTH; HIGH CYCLE FATIGUE; CRYOGENIC TEMPERATURES; CRACK INITIATION;

D O I：

10.1299/jsmea1988.34.3_347

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Titanium alloys have nonmagnetic and high strength properties as well as low density. These excellent characteristics are expected to make the alloys candidates for structural materials of cryogenic systems including superconducting machineries. We have been studying on mechanical properties of titanium alloys at cryogenic temperatures. Fatigue tests were carried out for Ti-5Al-2.5Sn and Ti-6Al-4V alloys, both of which had high fracture toughness at low temperatures. Fatigue crack initiation started at the inside of the specimens when tested at lower temperatures and under higher cycles. Neither macroscopic nor microscopic defects were observed at the crack initiation sites.

引用

页码：347 / 350

页数：4

共 7 条

[1]

ISHIKAWA K, 1988, ZAIRYORIYOU HDB, P186

[2]

NAGAI K, 1987, CRYOGENIC ENG, V22, P347

[3] TEMPERATURE RISE AND DEFORMATION BEHAVIORS OF MATERIALS DURING FATIGUE TESTS AT CRYOGENIC TEMPERATURES [J].

OGATA, T ;

ISHIKAWA, K ;

NAGAI, K ;

YURI, T .

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1987, 73 (01) :160-166

[4]

OGATA T, 1986, T ISIJ, V22, P48

[5]

REED P, 1983, MATERIALS LOW TEMPER

[6] INTERNAL CRACK INITIATION IN HIGH CYCLE FATIGUE FOR TI-5 AL-2.5 SN ELI ALLOY AT CRYOGENIC TEMPERATURES [J].

UMEZAWA, O ;

NAGAI, K ;

ISHIKAWA, K .

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1989, 75 (01) :159-166

[7] SUBSURFACE CRACK INITIATION IN HIGH CYCLE FATIGUE OF TI-6AL-4V ALLOYS AT CRYOGENIC TEMPERATURES [J].

UMEZAWA, O ;

NAGAI, K ;

ISHIKAWA, K .

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1990, 76 (06) :924-931

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