Document details

Microstructural characterization of carbon steels using ultrasonic velocity mea...

Author(s): Vera Lúcia de Araújo Freitas cv logo 1 ; Antonio Almeida Silva cv logo 2 ; Edgard de Macedo Silva cv logo 3 ; Victor Hugo C. de Albuquerque cv logo 4 ; João Manuel Ribeiro da Silva Tavares cv logo 5

Date: 2009

Persistent ID: http://hdl.handle.net/10216/44064

Origin: Repositório Aberto da Universidade do Porto

Subject(s): Ciências tecnológicas; Engenharia; Engenharia mecânica


Description
Non-destructive techniques are suitable alternatives for analysis and microstructural characterization of steels’ phases. Based on this, this work aims to analyze the behavior of longitudinal and transverse ultrasonic velocities in three different types of AISI steels: 1006, 1080 and quenched 1045. These materials were selected due to their distinct microstructures: ferrite, pearlite and martensite, respectively. By measuring sound velocities for both longitudinal and transversal waves, the reference values were obtained for each steels’ phase. The sound velocity in martensite is lower than the one in pearlite, and this one is lower than the sound velocity in ferrite. The differences in the values of the sound velocity arise primarily from dissimilarities in the values of the phases’ elastic modulus which are affected by the degree of lattice distortion and misorientation. Thus, sound velocity measurements can be successfully used as a non-destructive technique to perform steels’ microstructural characterization. Additionally to ultrasonic testing, the microstructures were characterized by metallography and hardness testing.
Document Type Conference Object
Language English
delicious logo  facebook logo  linkedin logo  twitter logo 
degois logo
mendeley logo

Related documents



    Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento EU