Mechanical properties and residual stresses changing on 00Cr12 alloy by nanoseconds laser shock processing at high temperatures

Ren, Xudong; Zhang, T.; Zhang, Y.K.; Jiang, Dawei; Yongzhuo, H.F.; Guan, H.B.; Qian, Xiaoming

doi:10.1016/j.msea.2010.10.098

Cited by 23 publications

(9 citation statements)

References 19 publications

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“…The interface of the grain boundary around the crack tip was enhanced by refining the metal structure. The alloy plasticity is enhanced at high temperatures, making dislocation slip easier [23]. It increases the interface resistance of the crack extension and work of the crack extension as well to prevent the crack propagation [24].…”

Section: Microstructure Morphologymentioning

confidence: 99%

“…This indicates that the CNTs were oxidized and solidified in half-tube shape as shown in Figure 6 to the nanotubes reshaped in half-tube structures. The high dispersion of the CNTs, high dislocation density and stable dislocations, and fine grain boundaries are the main reasons that the SS304 resisted crack growth and had enhanced fatigue life [20,21,23].…”

Section: Microstructure Morphologymentioning

confidence: 99%

“…It was originally called 18-8, which stood for its chromium and nickel contents [22]. It is mainly used in the nuclear industry and in the marine 2 Journal of Nanomaterials [23] reported the effect laser shock processing (LSP) on 00Cr12 alloy's mechanical properties at high temperatures. The results suggested that LSP has a significant effect on enhancing fatigue by applying the compressive residual stress.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue Crack Behavior of Stainless Steel 304 by the Addition of Carbon Nanotubes

Syed

Jiang

2014

Journal of Nanomaterials

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Fatigue is the main source of almost half of whole mechanical failures. This research investigated the effect on cyclic fatigue behavior of stainless steel 304 (SS304) when including carbon nanotubes (CNTs) at the crack tip. The cyclic fatigue tests were conducted on compact tension (CT) specimens to establish the relationship between crack growth and the number of cycles (a-N). It is found that the incorporation of a small amount of CNTs increased the fatigue life of the SS304/metal. Micrographs showed that the enhancement in fatigue life is caused by CNTs dense arrangement around the crack tip, entangled with each other, and finer grain size. Smooth bonding at the interface of the CNTs and SS304 grains is also observed.

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Section: Microstructure Morphologymentioning

confidence: 99%

Section: Microstructure Morphologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fatigue Crack Behavior of Stainless Steel 304 by the Addition of Carbon Nanotubes

Syed

Jiang

2014

Journal of Nanomaterials

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“…Many studies have shown that laser peening (LP) can remarkably enhance the fatigue strength of alloys [2][3][4][5]. Ren et al [6] investigated the mechanical properties of 00Cr12 alloy at high temperatures altered by laser shock processing (LSP). The results show that compressive residual stress introduced by LSP has a significant effect on fatigue enhancement.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Failure Analysis on Precracked 304 Stainless Steel Components Repaired by Laser with Addition of Nanocomposites

Wang

Jiang

2019

Soldag. insp.

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The service life of components can be extended by repairing fatigue crack with laser so as to improve resource utilization rate. However, the effect of laser repair may be influenced by the instability of laser treatment. To investigate the addition of nanocomposites on the laser repairing effect, fatigue test under uniaxial tension was carried out to evaluate the fatigue life of precracked 304 stainless steel components repaired by laser. According to the results obtained from fatigue tests, a probabilistic fatigue life distribution model considered the sampling size and discreteness of data was established based on the three-parameter Weibull distribution model and three-parameter stress-life equation. The results of probabilistic fatigue life distribution model show that the fatigue life of components repaired by laser with addition of WC nanocomposites can be enhanced significantly, especially the high cycle fatigue life. Moreover, the microstructure of repaired region show that the WC nanoparticles could refine the recrystallized grains and lead to the improvement of strength and toughness of material around crack tip, which are the main reason of improved fatigue life. Meanwhile, smooth surface of repaired region caused by WC nanoparticles can also prevent the initiation of microcracks.

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“…LSP has been shown to be effective in improving the fatigue properties of 6061-T6 aluminum alloy [1], 00Cr12 alloy [2], 2024-T3 Al alloy [3]. Micro structural changes induced by LSP were related to the laser processing parameters [4] and the heat treatment condition of alloys [5].…”

Section: Introductionmentioning

confidence: 99%

The effects of residual stress on fatigue behavior and crack propagation from laser shock processing-worked hole

Ren

Yang

et al. 2013

Materials & Design

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Mechanical properties and residual stresses changing on 00Cr12 alloy by nanoseconds laser shock processing at high temperatures

Cited by 23 publications

References 19 publications

Fatigue Crack Behavior of Stainless Steel 304 by the Addition of Carbon Nanotubes

Fatigue Crack Behavior of Stainless Steel 304 by the Addition of Carbon Nanotubes

Fatigue Failure Analysis on Precracked 304 Stainless Steel Components Repaired by Laser with Addition of Nanocomposites

The effects of residual stress on fatigue behavior and crack propagation from laser shock processing-worked hole

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