Published 1980 | Version v1
Report Open

Influence of Norton's law parameters in the determination of stresses and deformation in materials undergo creep phenomenon

Creators

  • 1. Pontificia Univ. Catolica do Rio de Janeiro (Brazil). Dept. de Engenharia Mecanica
  • 2. Laboratorio de Computacao Cientifica, Rio de Janeiro (Brazil)
  • 3. Rio de Janeiro Univ. (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia
  • 4. Faculdade de Engenharia Souza Marques, Rio de Janeiro (Brazil)

Description

Experimental results obtained from creep essays for AISI 316 stainless-steel in different temperatures are presented. These results are rounded off by Norton's law for which parameters A e n are determined. It is studied how variations of Norton's law parameters affect the state of stresses and deformation in thin and thick pipes subjected, to internal pressure and constant temperature. It is concluded that for the cases studied the stresses are little affected by the variations of the parameter n and it is difficult too anticipate degrees of the accumulated deformation since the uncertainties or variations in A and n introduce serious errors in the calculation of the deformation velocity

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Resultados experimentais obtidos em ensaios de fluencia para acos do tipo AISI 316 a diferentes temperaturas sao apresentados. Tais resultados sao aproximados pela lei de Norton cujos parametros A e n sao determinados. Estuda-se como as variacoes dos parametros da lei de Norton afetam o estado de tensoes e deformacoes em tubos finos e espessos submetidos a pressao interna e temperatura constante. Conclue-se que para os casos estudados as tensoes sao pouco influenciadas pelas variacoes do parametro n e que resulta dificil prever niveis de deformacao acumulada, uma vez que as incertezas ou variacoes em A e n introduzem serios erros na velocidade de deformacao. (Autor)

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Additional details

Additional titles

Original title (Portuguese)
Influencia dos parametros da lei de Norton na determinacao de tensoes e deformacoes em materiais que experimentam fenomenos de creep

Publishing Information

Imprint Pagination
28 p.
Report number
LCC--011/80

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
12634499
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
COMPILED DATA; CREEP; DEFORMATION; PIPES; STAINLESS STEEL-316; STRESS ANALYSIS; TEMPERATURE DEPENDENCE
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CHROMIUM ALLOYS; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; CORROSION RESISTANT ALLOYS; DATA; HEAT RESISTING ALLOYS; INFORMATION; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NUMERICAL DATA; STAINLESS STEELS; STEELS; TRANSITION ELEMENT ALLOYS