Erosion behaviour of hydro turbine steels

被引：47

作者：

Chauhan, Akhilesh K. ^{[1
]}

Goel, D. B. ^{[1
]}

Prakash, Satya ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Roorkee 247667, Uttar Pradesh, India

来源：

BULLETIN OF MATERIALS SCIENCE | 2008年 / 31卷 / 02期

关键词：

in situ strain hardening; solid particle erosion; tensile toughness; 13/4 martensitic stainless steel; 21-4-N nitronic steel;

D O I：

10.1007/s12034-008-0020-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The martensitic stainless steel (termed as 13/4) is currently being used for fabrication of underwater parts in hydroelectric projects. There are, however, several maintenance problems associated with the use of this steel. A nitronic steel (termed as 21-4-N) has been developed as an alternative with the specific aim of overcoming these problems. A comparative study has been made on the erosion behaviour of 13/4 and 21-4-N steels by means of solid particle impingement using gas jet. The eroded surfaces after erosion tests were analysed by scanning electron microscopy. It is observed that the 21-4-N nitronic steel possesses better resistance to erosion in comparison to 13/4 martensitic stainless steel. The austenitic matrix of the nitronic steel possesses high hardness, high tensile toughness and work hardening ability, which results in higher erosion resistance.

引用

页码：115 / 120

页数：6

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