Creep Damage Evaluation in High-Pressure Rotor Based on Hardness Measurement

被引：13

作者：

Cardoso, B. R. ^{[1
]}

Matt, C. F. T. ^{[1
]}

Furtado, H. C. ^{[1
]}

de Almeida, L. H. ^{[2
]}

机构：

[1] CEPEL, BR-20001 Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, COPPE, BR-21945 Rio De Janeiro, Brazil

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2015年 / 24卷 / 07期

关键词：

1CrMoV steel; Larson-Miller parameter; Remaining life prediction; Vickers hardness;

D O I：

10.1007/s11665-015-1555-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A creep life consumption study was conducted in a high-pressure turbine rotor belonging to a 363 MW thermal power plant. The component is manufactured with 30CrMoV412 steel, which is a typical 1CrMoV forged rotor steel, having operated for 112,000 h, under a pressure of 17.6 MPa and temperature of 520 A degrees C. The main objective of this paper is to evaluate the applicability of hardness tests as a tool for structural integrity analysis in the field. Two methods for estimating creep remaining life based on hardness measurements were used. Furthermore, metallographic replicas made during unit shutdown were observed by scanning electron microscopy, in order to detect creep voids and also to corroborate the results for accumulated creep damage obtained based on hardness measurements.

引用

页码：2784 / 2791

页数：8

共 13 条

[1] The exhaustion of creep ductility in 1CrMoV steel [J].