skip to main content
Idioma:
Tipo de recurso Mostra resultados com: Mostra resultados com: Índice

Investigation into the microstructure and dynamic compressive properties of selective laser melted Ti–6Al–4V alloy with different heating treatments

Liu, Yang ; Xu, Huaizhong ; Zhu, Lei ; Wang, Xiaofeng ; Han, Quanquan ; Li, Shuxin ; Wang, Yonggang ; Setchi, Rossitza ; Wang, Di

Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2021-02, Vol.805, p.140561, Article 140561 [Periódico revisado por pares]

Lausanne: Elsevier B.V

Texto completo disponível

Citações Citado por
  • Título:
    Investigation into the microstructure and dynamic compressive properties of selective laser melted Ti–6Al–4V alloy with different heating treatments
  • Autor: Liu, Yang ; Xu, Huaizhong ; Zhu, Lei ; Wang, Xiaofeng ; Han, Quanquan ; Li, Shuxin ; Wang, Yonggang ; Setchi, Rossitza ; Wang, Di
  • Assuntos: Bearing capacity ; Beta phase ; Compressive properties ; Compressive strength ; Ductility ; Dynamic compressive properties ; Dynamic loads ; Energy absorption ; Hardening rate ; Laser beam heating ; Laser beam melting ; Lasers ; Martensite ; Mechanical properties ; Microstructure ; Morphology ; Precipitates ; Rapid prototyping ; Selective laser melting ; Solution and aging treatment ; Solution heat treatment ; Strain rate ; Titanium alloys ; Titanium base alloys ; Ti–6Al–4V
  • É parte de: Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2021-02, Vol.805, p.140561, Article 140561
  • Descrição: As a commonly used engineering material, the mechanical properties of titanium alloy under dynamic loads are closely related to their microstructure. In this work, the effects of solution treatment (ST) and solution and aging treatment (SAT) on the microstructure and dynamic compressive properties of Ti–6Al–4V alloy manufactured by selective laser melting were studied. The results showed that the microstructure of selective laser melted Ti–6Al–4V consisted of nearly full acicular α′ martensite, then the acicular α′ martensite was decomposed into α+β phase with basket-weave morphology with solution treatment. Clusters of α2 particles with size of several hundred nanometers were precipitated in the α plates further with solution and aging treatment. The ultimate compressive strength (UCS) of selective laser melted TC4 alloy was increased with the increasing strain rate, showing strong strain rate hardening effect. Stress collapse happened once the strain exceeded 1500/s, which is the dominant failure model of selective laser melted TC4 under impacting load. As expected, the UCS of the ST sample decreased, but the ductility increased compared with the as-built sample; however, both the UCS and ductility of the SAT samples were enhanced synergistically due to the widely distributed α2 precipitates. Besides, the SAT samples had the highest energy absorption compared with the as-built and ST counterparts under the same conditions, indicating that the SAT samples had better load-bearing capacities. •Clusters of α2 particles with size of several hundred nanometers were precipitated with solution and aging treatment.•Compressive testing with different strain rates were carried out on the SLMed TC4 alloy.•Both the compressive strength and ductility were increased with the increasing strain rate.•Compressive strength and ductility of the SAT samples were enhanced synergistically compared with the as-built sample.
  • Editor: Lausanne: Elsevier B.V
  • Idioma: Inglês
Voltar para lista de resultados
Ir para página anteriorAnterior Resultado  3 AvançarIr para próxima página

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.