APPLICATION OF GRAIN-BOUNDARY ENGINEERING CONCEPTS TO ALLEVIATE INTERGRANULAR CRACKING IN ALLOYS-600 AND ALLOYS-690

被引:117
|
作者
CHEUNG, C [1 ]
ERB, U [1 ]
PALUMBO, G [1 ]
机构
[1] ONTARIO HYDRO, DIV RES, TORONTO M8Z 5S4, ONTARIO, CANADA
关键词
D O I
10.1016/0921-5093(94)90925-3
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Nickel-based alloys used in nuclear steam generator tubing have been found to be susceptible to intergranular stress corrosion cracking while in service. Following a recently developed model, grain boundary engineering concepts may be used to alleviate these concerns. This paper presents a report on the grain refinement approach in the proposed model which results in a higher probability of arresting stress corrosion cracks before reaching a critical length at which failure occurs. For this purpose, an electroplating system was developed to produce ternary Ni-Cr-Fe alloy coatings. Electroplating conditions are given for the production of Alloys 600 ana 690 having an average grain size in the range 100-250 nm.
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页码:39 / 43
页数:5
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