...K. Babu; T. S. Prasanna Kumar This paper utilizes the experimental and numerical results obtained during quenching of stainless steel (SS) probes in carbon nanotube (CNT) nanofluids to arrive at an optimum CNT concentration and bath temperature for maximum quenching heat transfer rate...

...Paul Stark; Udo Fritsching A multiphase flow and heat transfer model is used to simulate the flow field and the heat transfer process of a metal specimen located in a flow during the quenching process. The applied bubble crowd model is able to investigate the separate boiling phases within one...

...Božidar Liščić; Saša Singer; Hartmut Beitz For computer simulation of a quenching process, the fundamental prerequisite is to have the relevant heat transfer coefficient (HTC) calculated as function of workpiece’s surface temperature and time respectively. In order to calculate the HTC...

...Vedanth Srinivasan; De Ming Wang; David Greif; Maik Suffa In this paper, we present the results of the numerical computations carried out to simulate the direct immersion quenching process of several test pieces such as (1) trapezoidal block, (2) hollow block, and (3) engine-cylinder head using...

... work, fabrication parameters were optimized to manufacture heat treated Zr-2.5Nb alloy tube. A quenching dilatometer study was performed to establish the continuous cooling transus temperature for the alloy used in this study. Heat treatment under controlled condition in a dilatometer was performed...

...X. Luo; G. E. Totten Quenching is an essential part of the thermal process used for the manufacture of metallic parts. Quenching involves rapid cooling of a metal from an austenitizing temperature to a lower temperature; usually, but not necessarily, room temperature. The quenching process...

...Franc Ravnik; Janez Grum In order to control the quenching process and provide uniform quenching, wetting of the specimen with the quenching medium is very important since this will provide equable heat transfer and therefore uniform quenching conditions for the specimen. During the quenching...

...Božo Smoljan; Dario Iljkić; Furio Traven; Josipa Mrša The engineering and economical aspects of the optimization of steel shaft quenching and tempering were investigated. The mathematical model and method of computer simulation for the prediction of fatigue properties of quenched and tempered steel...

...Huiping Li; Lianfang He; Guoqun Zhao Quenching technology is a high non-linear process in which temperature, phase-transformation, and stress/strain affect each other. In this paper, the coupling computation configuration among temperature, phase-transformation, and stress is presented...

...V. A. Pozdnyakov; O. V. Borisov; V. P. Filippova A new method of simulation of residual stresses in ribbons of amorphous metallic alloys is proposed. The model considers the total deformation remaining in an amorphous metallic alloy during the quenching from liquid state to be the sum of elastic...

...Božidar Liščić; Saša Singer; Božo Smoljan A quench probe, based on the Temperature Gradient method was used to measure and record cooling curves when quenching real axially symmetric workpieces of any complex shape in liquid quenchants. Calculation of relevant heat transfer coefficients is based...

...Rafika Ikkene; Zahia Koudil; Mohamed Mouzali Solutions of high molecular weight polymers are used widely in the heat treatment of metal alloys known as quenching. Water-soluble polymers offer a number of environmental, economic, and technical advantages, including eliminating the quench-oil fire...

... involved during the manufacturing of rail steel will be provided here. The primary focus of this review is thermal processing including quenching and accelerated cooling of the rail steel. In addition, other important aspects relating to design and production of rail steel are discussed, including: impact...

... in the hardenability and a modi cation in the Fe-C equilibrium diagram were also veri ed, as shown in the literature. KEYWORDS: heat treatment, steels, quenching, hardenability, magnetic eld Introduction Steels are the most important alloys utilized as structural materials. Therefore, they are straightforwardly...

...Ashok Kumar Nallathambi; Yalcin Kaymak; Eckehard Specht; Albrecht Bertram Quenching is a complex thermo-mechano-metallurgical problem. Unexplored or without an optimized cooling strategy, a quenching process can end up with high residual stresses and distortion. This paper presents the mathematical...

...H. Kristoffersen; E. Troell; I. Felde; J. Bodin The quenching operation is a very critical part of the heat treatment process. Improper quenching parameters and drifting of the cooling characteristics during the working life of the quenchant will influence the quenching results. Sophisticated...

...Vaishali Jagannath; K. Narayan Prabhu In the present work, the suitability of vegetable oil blends with mineral oil and alumina based nanofluids as quench media for industrial heat treatment was investigated. Sunflower oil, palm oil, and mineral oil were used for preparing the blends. Alumina based...

...Nailu Chen; Xunwei Zuo; Shu Zhou; Jun Xu Some steels fail to meet mechanical property requirements after oil quenching with subsequent tempering. If water is used in an attempt to facilitate better property formation, quenching cracks may then be encountered. To address these situations...

...Noam Lior; Dimitrios Papadopoulos To learn about cooling of gas quenched batches, this paper reports on numerical predictions of local and average convective heat transfer coefficients, and overall pressure drops, on batches of five axially aligned, constant temperature, short cylindrical disks (25...

...Caner Şimşir; C. Hakan Gür Modeling and simulation of quenching are powerful tools in the design, optimization, and understanding of the quenching process since they provide quantitative results such as the evolution of microstructure and the internal stresses, which are practically impossible...