SOME ASPECTS OF ELECTRON-BEAM WELDED AND LASER WELDED FERRITIC FE-22CR-3MO-5NI-0.3RU ALLOY

被引：0
|
作者：
TJONG, SC [1 ]
KU, JS [1 ]
HO, NJ [1 ]
机构：
[1] NATL SUN YAT SEN UNIV,INST MAT SCI & ENGN,KAOHSIUNG,TAIWAN
来源：
JOURNAL OF MATERIALS SCIENCE | 1994年 / 29卷 / 10期
关键词：
D O I：
10.1007/BF00356813
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ferritic Fe-22Cr-3Mo-5Ni-0.3Ru alloy was welded by electron beam (EB) and laser techniques. Tensile tests, impact tests, oxalic acid etch, electrochemical potentiokinetic reactivation (EPR) and potential-time measurements were employed to investigate the mechanical properties, microstructural features and corrosion behaviour of the EB and laser welded metals. The oxalic acid etch tests revealed that the microstructure of the EB and laser welded metals consisted of columnar grains and cells, respectively. These structures were formed directly from the substrate by epitaxial solidification. Furthermore, the oxalic acid tests also showed that the EB and laser welded metals were immune to intergranular corrosion. Similar results were obtained by double loop EPR tests.
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页码：2648 / 2654
页数：7
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