Development of a novel severe plastic deformation method: friction stir equal channel angular pressing

Manafi, Babak; Saeidi, Morteza

doi:10.1007/s00170-015-8305-6

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…20 However, previous studies on ECAP deformation have mainly focused on the development of new ECAP moulds, disregarding the varying effects of sample temperatures and mould temperatures on the microstructure and mechanical properties. [21][22][23][24][25][26][27] Furthermore, the development of new moulds requires significant investments in terms of time, manpower and material resources. Therefore, it is crucial to explore the new technology that focus on the deformation temperatures without altering the mould structure.…”

Section: Introductionmentioning

confidence: 99%

The microstructure and mechanical properties of Mg-Sn-based alloy processed by differential-thermal equal channel angular pressing

Guo,

Li,

Zhou

et al. 2024

Materials Science and Technology

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Numerous studies of equal channel angular pressing (ECAP) considered the sample and mould temperatures as a whole, ignoring their different control effects during ECAP deformation. In this paper, the microstructure and mechanical properties of Mg-Sn-Zn-Zr (TZK) alloys were investigated after ECAP deformation at different mould and sample temperatures. The results revealed that higher mould temperatures controlled the actual deformation temperatures and lower sample temperatures prevented grain growth during preheating. After ECAP deformation at mould temperature of 300 °C and sample temperature of room temperature, the alloy consisted of abundant dynamical recrystallisation grains, with an elongation of 30% and a strength of 251.49 MPa. This study would provide a novel idea for the optimisation of the ECAP process.

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Section: Introductionmentioning

confidence: 99%

The microstructure and mechanical properties of Mg-Sn-based alloy processed by differential-thermal equal channel angular pressing

Guo,

Li,

Zhou

et al. 2024

Materials Science and Technology

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show abstract

“…However, the application of magnesium alloy has been limited by its low absolute strength and poor fatigue performance. The above problems will hopefully be resolved with the rapid development of surface strengthening technology [4][5][6]. Surface nanocrystallization induced by severe plastic deformation (SPD) has been drawing more and more attention in recent years [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Surface Characteristics and Fatigue Behavior of Gradient Nano-Structured Magnesium Alloy

Zhao

Zhang

Liu

2017

Metals

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High-frequency impacting and rolling was applied on AZ31B magnesium alloy to obtain a gradient nano-structured surface. Surface characteristics were experimentally investigated, and the nanocrystallization mechanism is discussed in detail. Results showed that the gradient nano-structure with the characteristics of work hardening, compressive residual stress and a smooth surface was induced on the treated surface. Grains on the top surface were generally refined to around 20 nm. Twins, dislocations and dynamic recrystallization dominated the grain refinement process. Fatigue strength of the treated specimens corresponding to 10 7 cycles was increased by 28.6% compared to that of the as-received specimens. The work hardened layer induced by high-frequency impacting and rolling is the major reason to improve fatigue life.

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A preliminary study on the feasibility of forward extrusion with variable angular cross section

Najafi

Manafi

Mohammadi

2017

Int J Adv Manuf Technol

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Development of a novel severe plastic deformation method: friction stir equal channel angular pressing

Cited by 5 publications

References 27 publications

The microstructure and mechanical properties of Mg-Sn-based alloy processed by differential-thermal equal channel angular pressing

The microstructure and mechanical properties of Mg-Sn-based alloy processed by differential-thermal equal channel angular pressing

Surface Characteristics and Fatigue Behavior of Gradient Nano-Structured Magnesium Alloy

A preliminary study on the feasibility of forward extrusion with variable angular cross section

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