Specimen Dimension and Grain Size Effects on Deformation Behavior in Micro Tensile of SUS304 Stainless Steel Foil

Xu, Jie; Guo, Bin; Shan, Debin; Li, Mingxing; Wang, Zhenlong

doi:10.2320/matertrans.m2013016

Cited by 28 publications

(15 citation statements)

References 20 publications

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“…For instance, tensile test results of 99.999 pct Al performed by Hansen [15] showed an increase in the flow stress as N decreased slightly from 3.9 to 3.2. Similar results were also observed by Xu et al [16] in the case of the tension of AISI 304 ultra-thin sheet stainless steel, when N changed from 1.13 up to 5.6 (t 100 lm) and by Klein et al when N changed from 2.9 (d ¼ 35 lm, t ¼ 100 lm) down to 2.6 (d ¼ 30 lm and t ¼ 78 lm). This phenomenon is so called ''smaller is stronger''.…”

Section: Introductionsupporting

confidence: 88%

“…The measured results were then compared with results obtained for materials with similar chemical composition but different thicknesses. [16] The lower values of both the initial yield stress R p0.2 and tensile strength R m of this material confirmed the phenomenon ''smaller is weaker'' that appears when the thickness of the sheet decreases. [46] Table II also shows the elongation of the specimen.…”

Section: A Monotonic Uniaxial Tensile Testsupporting

confidence: 65%

“…[3]. [16] 0.1 290.0 --51.1 Gallee et al [47] 0.8 276.0 651 -63 Tourki et al [48] 1.0 315.0 690 -58 Joshua et al [49] 1.5 300.0 755 -59.1 Ryoo et al [50] 2.0 320.0 690 -56 Fig. 11-Distribution of c along the width and length of the test specimen.…”

Section: Loading-unloading Testsmentioning

confidence: 98%

“…[16,16,19] For large values of N, the behavior of the material can be considered as homogeneous up to necking, then inhomogeneous with plastic strain localized in a band and rupture takes place in the necking band, whereas for N % 3 , there is a rupture prior to the development of a necking band with a surface of rupture perpendicular to the tensile direction. [11,19] Klein et al [24] explained this size effect on the fracture strain on the basis of different textures; however, such an influence is still not clearly understood.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mechanical Properties Involved in the Micro-forming of Ultra-thin Stainless Steel Sheets

Pham

Thuillier

Manach

2015

Metall Mater Trans A

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The objective of this paper is to characterize the mechanical behavior of an ultra-thin stainless steel, of 0.15-mm thickness, that is commonly used in the manufacturing of miniature connectors. The main focus is the relationship between some microstructural features, like grain size and surface roughness, and the macroscopic mechanical behavior investigated in uniaxial tension and simple shear. In tension, adaptations to the very small sheet thickness, in order to hold the specimen under the grips, are presented. Yield stress, initial elastic modulus, and evolution of the loading-unloading slope with plastic deformation were evaluated. Moreover, the kinematic contribution to the hardening was characterized by monotonic and cyclic simple shear test and reproduced by a mixed hardening law implemented in Abaqus finite element code. Then, the evolution of surface roughness with plastic strain, both in tension and simple shear, was analyzed. It was shown that in the case of an ultra-thin sheet, the stress levels, calculated either from an average thickness or when considering the effect of the surface roughness, exhibit a significant difference. Finally, the influence of surface roughness on the fracture of a tensile specimen was also investigated.

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Section: Introductionsupporting

confidence: 88%

Section: A Monotonic Uniaxial Tensile Testsupporting

confidence: 65%

Section: Loading-unloading Testsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanical Properties Involved in the Micro-forming of Ultra-thin Stainless Steel Sheets

Pham

Thuillier

Manach

2015

Metall Mater Trans A

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“…Previous researchers also showed that the ratio between grain size and specimen size has effect on specimen's yield stress especially for small specimen. 13,14) For the present experiment, due to inhomogeneous spatial distribution of grain size, it is hard to determine the actual grain structure for each micro-pillar, which means it is more complicated to determine the specimen size to grain size ratio for smaller pillars. However, according to L.V.…”

Section: Discussionmentioning

confidence: 99%

Statistical Approach for Understanding the Effect of Specimen Size on the Yield Stress and Its Scattering in Mechanically-Alloyed Cu and ODS-Cu Obtained by Micro-Pillar Compression Test

Liu

Kondo

et al. 2020

Mater. Trans.

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Oxide Dispersion Strengthening copper (ODS-Cu) alloy has high strength, high thermal conductivity and superior irradiation resistance which are needed for fusion reactor divertor components. In this study, specimen size dependence of the yield stress in Cu and ODS-Cu which were made by mechanical alloying and hot pressing was investigated by micro-pillar compression test. The distributions of yield stress values were different between the sizes, 1, 3 and 5 µm cubic micro-pillars, which can be explained by the inhomogeneous spatial distributions of both the crystallographic grain in matrix and oxide-particles.

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A Review on Micro/Nanoforming to Fabricate 3D Metallic Structures

Wang

et al. 2020

Advanced Materials

Self Cite

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With the rapid development of micro‐electromechanical systems (MEMS), micro/nanoscale fabrication of 3D metallic structures with complex structures and multifunctions is becoming more and more important due to the recent trend of product miniaturization. As a promising micromanufacturing approach based on plastic deformation, micro/nanoforming shows the attractive advantages of high productivity, low cost, near‐net‐shape, and excellent mechanical properties, compared with other non‐silicon‐based micromanufacturing technologies. However, micro/nanoforming is far less established due to the so‐called size effects in terms of materials models, process laws, tooling design, etc. The understanding of basic issues on micro/nanoforming is not yet mature, and it is currently a topic of rigorous investigation. Here, a systematic review on the micro/nanoforming processes of 3D structures with multifunctional properties is presented, wherein also a critical examination of the interplay between relevant length scales and size effects affecting the structural integrity of micro/mesoscale metallic systems is also provided. Finally, the challenges of micro/nanoscale fabrication are proposed, including the development trends of new micro/nanoforming processes, multiple field coupling effects, and theoretical modeling at the trans‐scale.

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Specimen Dimension and Grain Size Effects on Deformation Behavior in Micro Tensile of SUS304 Stainless Steel Foil

Cited by 28 publications

References 20 publications

Mechanical Properties Involved in the Micro-forming of Ultra-thin Stainless Steel Sheets

Mechanical Properties Involved in the Micro-forming of Ultra-thin Stainless Steel Sheets

Statistical Approach for Understanding the Effect of Specimen Size on the Yield Stress and Its Scattering in Mechanically-Alloyed Cu and ODS-Cu Obtained by Micro-Pillar Compression Test

A Review on Micro/Nanoforming to Fabricate 3D Metallic Structures

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