Impression creep technique—An overview

Sastry, D. H.

doi:10.1016/j.msea.2005.05.110

Cited by 111 publications

(56 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The exercise would help to predict the weakest spot of the component or material system under a complex situation. considering the yield stress and ultimate strength value of the test material (Sastry 2005;Udayaprasanna 2009). A higher testing temperature also will enhance the creep rate, and tests conducted at different temperatures will enable the investigator to find the stress exponent values (Mahmudi and Geranmayeh 2010).…”

Section: Discussionmentioning

confidence: 99%

Indentation creep studies to evaluate the mechanical properties of stainless steel welds

Prasanna

Udupa

2016

Australian Journal of Mechanical Engineering

View full text Add to dashboard Cite

Size being limited for preparing standard specimens for mechanical tests, the weld poses problems to researchers and scientists in estimating the strength parameters and workhardening coefficients. The integrity of the weld is difficult to probe into, particularly when the temperature of operation is much higher than the room temperature. The indentation creep test route is successfully tried by the authors to present a detailed commentary on the mechanical properties of a stainless steel weld at different test temperatures using a methodology whereby the creep test results are correlated to the compression test results and correlation equations developed. As the indentation creep tests can be carried out on a small-sized sample, the method enables one to carry out only this test to judge the mechanical properties of the welds.

show abstract

Section: Discussionmentioning

confidence: 99%

Indentation creep studies to evaluate the mechanical properties of stainless steel welds

Prasanna

Udupa

2016

Australian Journal of Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…Unlike the impression creep test [23] where the creep properties are related to the small volume of material close to the contact region between the specimen and the loading device, the TBSwas designed to be able to obtain creep properties from the overall specimen creep deformation; not just from the localised deformation which occurs in the contact area between the loading pins and the loading pins supporting material. In order to make a suitable choice of specimen dimension ratios, with minimum localized deformation in the contact areas, the FE analyses results presented in  is the total TBS deformation rate measured at the loading pins.…”

Section: Recommended Specimen Dimension Ratio Rangesmentioning

confidence: 99%

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

Ali

Hyde

Sun

2016

High Temperature Materials and Processes

View full text Add to dashboard Cite

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.

show abstract

“…Hence a constant stress cannot be maintained with penetration of the indenter. The drawback can be overcome by impression creep testing method where a uniform cross section indenter is used under uniaxial compression [5]. The main advantages of IC are: (i) the small sample size requirement, (ii) creep behavior of different zones similar to that of weld zones can be determined, (iii) the test process takes very less time and (iv) the data can be used for modeling the creep deformation of emerging materials [6][7].…”

Section: Introductionmentioning

confidence: 99%

Indentation Creep Behavior of Nugget Zone of Friction Stir Welded 2014 Aluminum Alloy

Das

Robi

Sankar

2018

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. The present study is aimed at evaluating the creep behavior of the nugget zone of friction welded 2014 Aluminum alloy by indentation creep tests. Impression creep testing was carried out at different temperatures of 300ºC, 350ºC and 400 ºC with stress124.77MPa, 187.16MPa, 249.55 MPa using a 1.0 mm diameter WC indenter. Experiments were conducted till the curve enters the steady state creep region. Constitutive modeling of creep behavior was carried out considering the temperature, stress and steady state creep rate. Microstructural investigation of the crept specimen at 400ºC temperature and 187.16 MPa load was carried out and found that the small precipitates accumulate along the grain boundaries at the favorable conditions of the creep temperature and stress, new precipitates evolve due to the ageing. The grains are broken and deformed due to the creep phenomena.

show abstract

Impression creep technique—An overview

Cited by 111 publications

References 19 publications

Indentation creep studies to evaluate the mechanical properties of stainless steel welds

Indentation creep studies to evaluate the mechanical properties of stainless steel welds

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

Indentation Creep Behavior of Nugget Zone of Friction Stir Welded 2014 Aluminum Alloy

Contact Info

Product

Resources

About