Long term creep rupture properties and microstructural change in welds of 2.25Cr-1Mo steel thick plates

被引：0

作者：

Watanabe, T ^{[1
]}

Yamazaki, M ^{[1
]}

Hongo, H ^{[1
]}

Tanabe, T ^{[1
]}

机构：

[1] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan

来源：

PROGRESS IN MECHANICAL BEHAVIOUR OF MATERIALS (ICM8), VOL 2: MATERIAL PROPERTIES | 1999年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Creep rupture properties of normalized and tempered 2.25Cr-1Mo steel thick plate welds were determined at 823 K. Base metal, welded joint and weld metal specimens were prepared for the tests. At higher stresses, rupture strengths were larger in the base metal than those in the others, whereas at lower stresses, their strengths were almost the same, suggesting existence of an "inherent creep strength" in ferritic steels. Location of fracture in the welded joint specimens shifted from the heat affected zone to weld metal part and again back to the heat affected zone when rupture times exceeded 10,000 h. These results were discussed in terms of microstructural change of the steel welds with creep test duration under stresses.

引用

页码：658 / 663

页数：6

共 12 条

[1]

[Anonymous], 1997, NRIM CREEP DATA SHEE

[2] FUNDAMENTAL PROPERTIES OF LONG-TERM CREEP STRENGTH FOR FERRITIC HEAT-RESISTANT STEELS [J].