Your browser doesn't support javascript.
loading
High-Cycle Fatigue Behavior and Corresponding Microscale Deformation Mechanisms of Metastable Ti55511 Alloy with A Basket-Weave Microstructure.
Luo, Hengjun; Yuan, Wuhua; Xiang, Wei; Deng, Hao; Yin, Hui; Chen, Longqing; Cao, Sheng.
Afiliación
  • Luo H; College of Materials Science and Engineering, Hunan University, Changsha 410082, China.
  • Yuan W; Deyang Wanhang Die Forging Co., Ltd., China National Erzhong Group Co., Deyang 618013, China.
  • Xiang W; College of Materials Science and Engineering, Hunan University, Changsha 410082, China.
  • Deng H; College of Materials Science and Engineering, Hunan University, Changsha 410082, China.
  • Yin H; Deyang Wanhang Die Forging Co., Ltd., China National Erzhong Group Co., Deyang 618013, China.
  • Chen L; Deyang Wanhang Die Forging Co., Ltd., China National Erzhong Group Co., Deyang 618013, China.
  • Cao S; Deyang Wanhang Die Forging Co., Ltd., China National Erzhong Group Co., Deyang 618013, China.
Materials (Basel) ; 15(20)2022 Oct 13.
Article en En | MEDLINE | ID: mdl-36295212
High-cycle fatigue (HCF) is a critical property of metastable ß Ti alloys in aerospace applications. In this work, the HCF behavior and corresponding microscale deformation mechanisms of a metastable Ti-5Al-5Mo-5V-1Cr-1Fe (Ti55511) alloy with a basket-weave structure were investigated. HCF and its deformation mechanisms of a Ti55511 alloy were systematically studied in the deformed condition by using a scanning electron microscope (SEM), a transmission electron microscope (TEM), and electron backscatter diffraction (EBSD). It was found that the Ti55511 alloy exhibited an excellent HCF strength (107 cycles, Kt = 1, R = 0.06) of 738 MPa. The fractographic investigation demonstrated that fatigue striations and secondary cracks were the main features in the crack initiation zone. Dislocation analyses indicated that the HCF deformation of the basket-weave microstructure was mainly affected by the dislocation slipping of the primary α (αp) phase. In addition, the dislocation pile-up at the αp/ßtrans interface led to crack initiation. EBSD analyses indicated that the prismatic type slip system of the αp phase was preferentially activated during the HCF deformation process of the Ti55511 alloy, followed by the basal type and pyramid type systems.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza