The effect of cyclic torsion on the dislocation structure of drawn mild steel
Título del documento: The effect of cyclic torsion on the dislocation structure of drawn mild steel
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312925
ISSN: 1516-1439
Autores: 1


2
Instituciones: 1Universidade Federal de Minas Gerais, Departamento de Engenharia Metalurgica, Belo Horizonte, Minas Gerais. Brasil
2Comissao Nacional de Energia Nuclear, Instituto de Pesquisas Energeticas e Nucleares, Sao Paulo. Brasil
Año:
Periodo: Jul-Sep
Volumen: 9
Número: 3
Paginación: 345-348
País: Brasil
Idioma: Inglés
Tipo de documento: Nota breve o noticia
Enfoque: Experimental
Resumen en inglés Cold forming is usually associated with the "work hardening" of the material being formed. The work hardening behavior of metals subject to complex processing paths is different from that in monotonic deformation. The results show that, after some initial hardening, there is a possibility that further deformation will cause softening in the material ("work softening"). Recent work showed that cyclic torsion applied to drawn products causes changes in the subsequent tensile behavior of low carbon steel, and that the effect will depend on the previous "history" of the material. For annealed samples, the cyclic torsion leads to an increase in the yield strength, but does not affect the tensile strength and elongation. For the case of previously drawn bars, the cyclic deformation caused a decrease in the yield and tensile strength and an increase in the total elongation. The present paper discusses the dislocation structure changes associated with different strain paths in mild steel
Disciplinas: Ingeniería
Palabras clave: Ingeniería de materiales,
Ingeniería metalúrgica,
Acero,
Propiedades mecánicas,
Torsión,
Resistencia a la tracción
Keyword: Engineering,
Materials engineering,
Metallurgical engineering,
Steel,
Mechanical properties,
Torsion,
Tensile strength
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