Modelling and experimental study of fatigue of powder metal steel (FC-0205)

Allison, P. G.; Hammi, Youssef; Jordon, J.B.; Horstemeyer, M.F.

doi:10.1179/1743290113y.0000000063

Cited by 18 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The last stage, N LC , is the number of cycles required for the advancement of a long crack to ultimate fracture. The MSF model has been modified and extended for a variety of materials and applications since its development [31][32][33][34][35][36][37][38][39][40].…”

Section: Multistage Fatigue Modelmentioning

confidence: 99%

Experiments and Modeling of Fatigue Behavior of Friction Stir Welded Aluminum Lithium Alloy

Cisko

Jordon

Avery

et al. 2019

Metals

View full text Add to dashboard Cite

An extensive experimental and computational investigation of the fatigue behavior of friction stir welding (FSW) of aluminum–lithium alloy (AA2099) is presented. In this study, friction stir butt welds were created by joining AA2099 using two different welding parameter sets. After FSW, microstructure characterization was carried out using microhardness testing, scanning electron microscopy, and transmission electron microscopy techniques. In particular, the metastable strengthening precipitates T1 (Al2CuLi) and δ’(Al3Li) seen in the base metal were observed to coarsen and dissolve due to the FSW process. In order to evaluate the static and fatigue behavior of the FSW of the AA2099, monotonic tensile and fully-reversed strain-controlled fatigue testing were performed. Mechanical testing of the FSW specimens found a decrease in the ultimate tensile strength and fatigue life compared to the base metal. While the process parameters had an effect on the monotonic properties, no significant difference was observed in the number of cycles to failure between the FSW parameters explored in this study. Furthermore, post-mortem fractography analysis of the FSW specimens displayed crack deflection, transgranular fracture, and delamination failure features commonly observed in other parent Al–Li alloys. Lastly, a microstructurally-sensitive fatigue model was used to elucidate the influence of the FSW process on fatigue life based on variations in grain size, microhardness, and particle size in the AA2099 FSW.

show abstract

Section: Multistage Fatigue Modelmentioning

confidence: 99%

Experiments and Modeling of Fatigue Behavior of Friction Stir Welded Aluminum Lithium Alloy

Cisko

Jordon

Avery

et al. 2019

Metals

View full text Add to dashboard Cite

show abstract

“…The microstructure-sensitive fatigue (MSF) model implemented in this study was first proposed by McDowell [39,40] for aluminum alloy A356-T6 [41]. The model was further expanded to additional aluminum alloys [42][43][44][45], other materials [46][47][48][49][50][51][52], and AM processes [30,53,54]. To elucidate the microstructural effect of AFS-D on fatigue resistance, the MSF was calibrated for the AFS-D using initial calibration parameters determined by Avery et al [30].…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Microstructure and Mechanical Properties of Al-Zn-Mg-Cu Alloy Repaired via Additive Friction Stir Deposition

Avery

Cleek

Phillips

et al. 2022

Journal of Engineering Materials and Technology

Self Cite

View full text Add to dashboard Cite

A novel solid-state additive manufacturing (AM) process, additive friction stir deposition (AFS-D), provides a new pathway for additively repairing damaged nonweldable aerospace materials that are susceptible to induced thermal gradients within the microstructure. In this work, we quantify the microstructural evolution and mechanical performance of an additively repaired AA7075-T651 (Al-Zn-Mg-Cu) via the AFS-D process. To evaluate the AFS-D process for repairing high strength aluminum alloys, the AFS-D technique was used to additively fill a linear groove that was machined into an AA7075-T651 plate. After repairing the plate with the AFS-D process, the repaired plate was subjected to standard T6 heat treatment. The results of this study show that the heat-treated AFS-D repair did not exhibit any significant grain growth and demonstrated an increase in the average Vickers hardness in the repair compared with the wrought 7075-T651 control. Tensile and fatigue behavior was investigated for heat-treated repair and compared with the wrought AA7075-T651 control. The heat-treated repair exhibited wrought-like tensile properties for yield stress (YS) and ultimate stress; however, the heat-treated repair had significant scatter in the elongation to failure. Additionally, the mean fatigue behavior of the heat-treated repairs displayed a reduction in cycles to failure compared with the wrought control. Lastly, a microstructure-sensitive fatigue life model was used to elucidate process-structure-property fatigue mechanism relations of the heat-treated repair and wrought AA7075.

show abstract

“…тановке значений экспериментальных величин в известные теплофизические (5)-(7) получены величины удельной теплоемкости, коэффициента ости, а полученные результаты сведены в таблицу. (6) где оизводства фирмы «Маhle» при его нагреве, мкм. ции в формулах (1) -(4) составляют 0,99, что свидетельствует о ых аналитических зависимостей, описывающих изменение лы определения теплофизических параметров, в которые чения параметров в ходе проведения эксперимента.…”

Section: методы и материалыunclassified

“…Политика импортозамещения продукции в РФ, в том числе деталей машин, предполагает обязательное соответствие заданному уровню качества, которое должно подтверждаться техническим контролем на разных стадиях жизненного цикла изделия, иначе произойдет рост количества отказов и убытков в процессе эксплуатации строительной техники и оборудования [2]. Заводы-изготовители деталей машин используют конструктивные методы повышения надежности путем обращения к различным материалам с целью повышения долговечности, выносливости продукции, снижения себестоимости [3,4,5,6,7].…”

Section: Introductionunclassified

Technology Improvement of Plain Bearings’ Technical Control in Construction Machinery and Equipment

et al. 2019

View full text Add to dashboard Cite

Introduction. The creation of new machinery and development of modern technologies of its repair in many respects with generation of materials with required properties are defined. Special attention is paid to the economy and widespread introduction of resource-saving and environmentally friendly technologies and to the problems of obtaining and exploitation of new materials, improvement of the goods’ quality.The quality control of materials, which have been used for plain bearings manufacture, during repair action of construction machinery and equipment, as well as reduction of cost and duration of technical control operations implementation are among the issues for repair service organizations. Their solution would enable to increase post-repair resource, cut down failures number, and reduce costs of faults removal in warranty period.Materials and methods. The authors suggest a thermal method of plain bearings materials quality assessment in internal combustion engines. This method is remarkable for its comparative simplicity; it does not require destruction of the material and application of expensive equipment.Results. The dependences of “Cummins” and “Mahle” bushings thickness change on the heating temperature as well as samples warming temperature dependence on test duration have been obtained. According to the derived results such parameters as specific heat and thermal conductivity coefficient are defined. The results of carried out tests show that thermal physic parameters of unoriginal bushings differ from original ones by 11% in thermal conductivity coefficient and by 1.56 times in specific heat.Discussion and conclusions. The calculation of specific heat, thermal conductivity of plain bearings allows to determine the probability of their failure at the stage of entrance control and therefore, to make a more correct decision when choosing parts for execution high-quality repair. As a consequence of temperature change comparison, when bushings samples of “Cummins” and “Mahle” companies are heated, it could be concluded that heating intensity of an original bushing is 17% higher and the reciprocal of bushing temperature gradient under warming is 1.27 times lower in comparison with an unoriginal plain bearing.

show abstract

Modelling and experimental study of fatigue of powder metal steel (FC-0205)

Cited by 18 publications

References 30 publications

Experiments and Modeling of Fatigue Behavior of Friction Stir Welded Aluminum Lithium Alloy

Experiments and Modeling of Fatigue Behavior of Friction Stir Welded Aluminum Lithium Alloy

Evaluation of Microstructure and Mechanical Properties of Al-Zn-Mg-Cu Alloy Repaired via Additive Friction Stir Deposition

Technology Improvement of Plain Bearings’ Technical Control in Construction Machinery and Equipment

Contact Info

Product

Resources

About