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  1. No Access

    Article

    Strengthening Effect of Decreased Dislocation Density After Annealing in Pure Aluminum or Copper

    Plastic deformation in metals occurs through the generation and movement of dislocations, leading to strain hardening. The dislocation density has long been known as a measure of work hardening in metals and a...

    Eun-Ae Choi, Yun Soo Lee, Sang ** Lee, Jee Hyuk Ahn… in Metals and Materials International (2024)

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    Article

    Discontinuous precipitation at the deformation band in copper alloy

    The Cu-Ni-Si alloy is known as a precipitation hardening alloy, where the Ni2Si intermetallic compound is precipitated in the matrix during aging. There are two types of precipitation of Ni2Si: continuous and dis...

    Seung Zeon Han, Jee Hyuk Ahn, Young Soo You… in Metals and Materials International (2018)

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    Article

    Optimization of conductivity and strength in Cu-Ni-Si alloys by suppressing discontinuous precipitation

    Cu-Ni-Si alloys with and without Ti were solution treated at 980 °C for 1 h and cooled by air cooling and water quenching, after which the specimens were aged at 500 °C. The two alloys showed different aging c...

    Seung Zeon Han, Jehyun Lee, Sung Hwan Lim… in Metals and Materials International (2016)

  4. No Access

    Article

    Tensile and electrical properties of direct aged Cu-Ni-Si-x%Ti alloys

    In this study, the tensile and electrical properties of aged Cu-4Ni-Si-Ti (C4NS-Ti) alloys, with and without solution heat treatment (SHT) prior to aging, were examined. The C4NS specimens, without and with 0....

    Eungyeong Lee, Kwangjun Euh, Seung Zeon Han… in Metals and Materials International (2013)

  5. No Access

    Article

    Effects of Ti addition and heat treatments on mechanical and electrical properties of Cu-Ni-Si alloys

    The mechanical and electrical properties of Cu-5.98Ni-1.43Si and Cu-5.98Ni-1.29Si-0.24Ti alloys under heat treatment at 400 and 500 °C after hot- and cold-rolling were investigated, and a microstructural analy...

    Hyung Giun Kim, Taeg Woo Lee, Sang Min Kim… in Metals and Materials International (2013)

  6. No Access

    Article

    Microstructural study on effects of C-alloying on Cu-Fe-P cast alloy

    The effects of C-alloying on the microstructure and secondary phase particles of Cu-2.5Fe-0.1P cast alloy were investigated by transmission electron microscopy (TEM), high-resolution electron microscopy (HREM)...

    Hyung Giun Kim, Taeg Woo Lee, Seung Zeon Han… in Metals and Materials International (2012)

  7. No Access

    Article

    Formation of nano-sized grains in Cu and Cu−Fe−P alloys by accumulative roll bonding process

    Mechanical properties and formation of nano-sized grains in Cu and Cu−Fe−P alloys by the accumulative roll bonding (ARB) process were investigated. Nano-sized grains were successfully obtained in OFC and PMC-9...

    Cha-Yong Lim, Seung-Zeon Han, Seong-Hee Lee in Metals and Materials International (2006)