Effect of geometric factors and processing parameters on plastic damage of SUS304 stainless steel by small punch test

Yang, Sisheng; Zhou, Jianxin; Ling, Xiang; Yang, Zheng

doi:10.1016/j.matdes.2012.05.029

Cited by 35 publications

(13 citation statements)

References 31 publications

(41 reference statements)

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“…The TBS creep testing techniquesis unlike the smallpunch creep testing (SPCT) [28,29], where the specimen shape and dimensions change completely during the test; they change from having a flat surface disk to hemispherically ended, conicalshape. The changes in the overall TBS specimen shape and dimensions during the test are relatively small (see Fig 19).…”

Section: Minimum Creep Strain Rates and Creep Rupture Data For The Grmentioning

confidence: 99%

Small Two-Bar Specimen Creep Testing of Grade P91 Steel at 650°C

Ali

Hyde

Sun

2016

High Temperature Materials and Processes

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractCommonly used small creep specimen types, such as ring and impression creep specimens, are capable of providing minimum creep strain rate data from small volumes of material. However, these test types are unable to provide the creep rupture data. In this paper the recently developed Two-bar specimen type, which can be used to obtain minimum creep strain rate and creep rupture creep data, from small volumes of material is described. Conversion relationships are used to convert (i) the applied load to the equivalent uniaxial stress, and (ii) the load line deformation rate to the equivalent uniaxial creep strain rate. The effects of the specimen dimension ratios on the conversion factors are also discussed in this paper. This paper also shows comparisons between Two-bar specimen creep test data and the corresponding uniaxial creep test data, for grad P91 steel at 650 o C.

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Section: Minimum Creep Strain Rates and Creep Rupture Data For The Grmentioning

confidence: 99%

Small Two-Bar Specimen Creep Testing of Grade P91 Steel at 650°C

Ali

Hyde

Sun

2016

High Temperature Materials and Processes

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“…These attempts are discussed in detail in Refs. [22][23][24][25], and therefore only a brief description is given in this paper. The SPCT exhibits large elastic and plastic deformations and an increasing contact area between the disk and the loading ball during the test.…”

Section: Small Punch Creep Testing Technique (Spct)mentioning

confidence: 99%

On the Determination of Material Creep Constants Using Miniature Creep Test Specimens

Hyde

Ali

Sun

2014

Journal of Engineering Materials and Technology

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Full size creep test specimens, i.e., conventional uniaxial creep test specimen andBridgman notch specimens are usually used to determine the full set of material constants for any creep model. However, in many situations, sufficient material is not available for theses specimens to be manufactured from it. Therefore, small creep test specimens have been introduced and used to determine (i) creep constants and (ii) the remaining life time for engineering components. Two commonly used small creep specimen types, i.e., the impression and the small ring creep tests, are used in this paper to determine the steady state creep constants. However, these specimen types are limited for use in determining the secondary creep properties, i.e., they are unable to determine the full set of material creep constants for creep damage models. In this paper the recently developed small twobar creep test specimen and the newly developed small notched specimen test are described and used to determine a full set of material constants for Kachanov and LiuMurakami creep damage models. The small notched specimen manufacturing, loading and testing procedures are described in this paper. P91 steel at P91 steel at 650° C have been used to compare the material constants obtained from the small two-bar and the small notched creep test specimens with those obtained from the conventional uniaxial creep test specimens and Bridgman notch specimens. The results show remarkably good agreement between the two sets of results.

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“…During the test, the values of applied load and displacement of the punch are noted, and after the appropriate treatment of the stored data, a loaddisplacement curve of the punch is obtained. This test was developed in the nuclear industry in the eighties [1] and has since been used successfully on numerous occasions [2][3][4][5] in those cases where there is not enough material to carry out standard tests to obtain the mechanical properties of materials, such as in the case of welds or irradiated material. The SPT has also been used to estimate material fracture properties [6,7], and in recent years even pre-cracked [8] or pre-notched [9,10] specimens have been used.…”

Section: Introductionmentioning

confidence: 99%