HREM observations of mechanical twinning in Cu-Ti alloys: Structure of incoherent and coherent twin interfaces
Апстракт
The flow of Cu-Ti alloys hardened by coherent β′ precipitates (Cu4Ti, D1a superstructure) is particularly interesting since these alloys show profuse twinning on multiple systems after small amounts of plastic flow by slip. In this paper, studies of the fine-scale structure of the mechanical twins which form in particle hardened Cu-Ti alloys are reported. The growth of deformation twins occurs via the motion of G-ledges at twin/matrix interfaces and via a coalescence of fine twins. The atomic structure of the coherent twin/matrix interfaces and associated single and multiple layer ledges are characterized. Incoherent interfaces at the tip of deformation twins generated by 90° and 30° twinning dislocations have been investigated.
Кључне речи:
Copper alloys / Crystal atomic structure / Dislocations (crystals) / Electron microscopy / Interfaces (materials) / Plastic flow / Precipitation (chemical) / Coherent twin interfaces / Incoherent twin interfaces / Twinning dislocationsИзвор:
Proceedings of the TMS Fall Meeting, 1997, 83-88Издавач:
- Minerals, Metals & Materials Soc (TMS)
Напомена:
- Proceedings of the 1997 TMS Fall Symposium 14 September 1997 through 18 September 1997
Scopus: 2-s2.0-0031652681
Институција/група
Tehnološko-metalurški fakultetTY - CONF AU - Radetić, Tamara AU - Radmilović, Velimir AU - Soffa, William A. PY - 1997 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7266 AB - The flow of Cu-Ti alloys hardened by coherent β′ precipitates (Cu4Ti, D1a superstructure) is particularly interesting since these alloys show profuse twinning on multiple systems after small amounts of plastic flow by slip. In this paper, studies of the fine-scale structure of the mechanical twins which form in particle hardened Cu-Ti alloys are reported. The growth of deformation twins occurs via the motion of G-ledges at twin/matrix interfaces and via a coalescence of fine twins. The atomic structure of the coherent twin/matrix interfaces and associated single and multiple layer ledges are characterized. Incoherent interfaces at the tip of deformation twins generated by 90° and 30° twinning dislocations have been investigated. PB - Minerals, Metals & Materials Soc (TMS) C3 - Proceedings of the TMS Fall Meeting T1 - HREM observations of mechanical twinning in Cu-Ti alloys: Structure of incoherent and coherent twin interfaces EP - 88 SP - 83 UR - https://hdl.handle.net/21.15107/rcub_technorep_7266 ER -
@conference{ author = "Radetić, Tamara and Radmilović, Velimir and Soffa, William A.", year = "1997", abstract = "The flow of Cu-Ti alloys hardened by coherent β′ precipitates (Cu4Ti, D1a superstructure) is particularly interesting since these alloys show profuse twinning on multiple systems after small amounts of plastic flow by slip. In this paper, studies of the fine-scale structure of the mechanical twins which form in particle hardened Cu-Ti alloys are reported. The growth of deformation twins occurs via the motion of G-ledges at twin/matrix interfaces and via a coalescence of fine twins. The atomic structure of the coherent twin/matrix interfaces and associated single and multiple layer ledges are characterized. Incoherent interfaces at the tip of deformation twins generated by 90° and 30° twinning dislocations have been investigated.", publisher = "Minerals, Metals & Materials Soc (TMS)", journal = "Proceedings of the TMS Fall Meeting", title = "HREM observations of mechanical twinning in Cu-Ti alloys: Structure of incoherent and coherent twin interfaces", pages = "88-83", url = "https://hdl.handle.net/21.15107/rcub_technorep_7266" }
Radetić, T., Radmilović, V.,& Soffa, W. A.. (1997). HREM observations of mechanical twinning in Cu-Ti alloys: Structure of incoherent and coherent twin interfaces. in Proceedings of the TMS Fall Meeting Minerals, Metals & Materials Soc (TMS)., 83-88. https://hdl.handle.net/21.15107/rcub_technorep_7266
Radetić T, Radmilović V, Soffa WA. HREM observations of mechanical twinning in Cu-Ti alloys: Structure of incoherent and coherent twin interfaces. in Proceedings of the TMS Fall Meeting. 1997;:83-88. https://hdl.handle.net/21.15107/rcub_technorep_7266 .
Radetić, Tamara, Radmilović, Velimir, Soffa, William A., "HREM observations of mechanical twinning in Cu-Ti alloys: Structure of incoherent and coherent twin interfaces" in Proceedings of the TMS Fall Meeting (1997):83-88, https://hdl.handle.net/21.15107/rcub_technorep_7266 .