Influence of rolling temperature on interface properties of the cross wedge rolling of 42CrMo/Q235 laminated shaft

Wu, ZhiJie; Wen, Peng; Shu, Xinyu

doi:10.1007/s00170-016-9734-6

Cited by 29 publications

(10 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This package was surrounded with perimeter bars that were welded in order to build a hermetic closure and then evacuated by a vacuum pump; microstructure, chemical composition, and distribution of interface oxides inclusions can be related to the vacuum degree inside the symmetrically stacked package [20,21]. This package was hot rolled after being pre-heated above the recrystallization temperature [22]. The local contact points between base steel and cladding alloy undergo plastic deformation under the high rolling pressure [11], so their area gradually expands, interesting the entire bonding surface.…”

Section: Clad Plates Production Specimens Fabrication and Experimenmentioning

confidence: 99%

Metallurgical Characterization of the Interfaces in Steel Plates Clad with Austenitic Steel or High Ni Alloys by Hot Rolling

Giudice

Missori

Murdolo

et al. 2020

Metals

View full text Add to dashboard Cite

An integrated experimental-theoretical approach to the metallurgical characterization of the interfaces in steel plates clad by hot rolling is proposed. Three different couplings of materials have been studied: ASTM A 515 Gr.60 low carbon steel clad with austenitic stainless steel AISI 304L; extra low carbon steel ASTM A283 clad with high Ni content Alloy 59; and, low carbon steel AISI 1010 clad with Cu-Ni Monel 400. Experimental investigations, which are addressed to analyse the microstructural changes near the interfaces and identify the present phases, have been carried out through scanning electron microscopy (SEM) observations, microanalytical measurements by energy dispersive spectroscopy (EDS), and Vickers microhardness tests. In all of the cases examined, the zones that are affected by detrimental microstructural changes results in being considerably less thick than the overall cladding layer. Simulations that are based on theoretical diffusion modelling have been integrated to the experimental characterization by introducing a cladding parameter that acts on the diffusion bonding efficiency, in order to evaluate the effects of process temperature and time variations on diffusion bonding efficiency and stability. In particular, this analytical investigation has shown how the shorter is the duration of the diffusion transient and the higher the temperature, the lower results the sensitivity of the diffusion processes to temperature fluctuations.

show abstract

Section: Clad Plates Production Specimens Fabrication and Experimenmentioning

confidence: 99%

Metallurgical Characterization of the Interfaces in Steel Plates Clad with Austenitic Steel or High Ni Alloys by Hot Rolling

Giudice

Missori

Murdolo

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…CWR products with corrugated surface were produced [8]. The composite CWR shafts made by 42CrMo and Q235 was studied in terms of deformation characteristics and effects of process parameters [9,10]. The new technologies drive the market demand in CWR expanding sharply.…”

Section: Introductionmentioning

confidence: 99%

Investigation and prediction of central cracking in cross wedge rolling

Zhou¹,

Sun²,

Wang³

et al. 2022

Preprint

View full text Add to dashboard Cite

Central cracking refers to the formation of internal cavities in cross wedge rolling (CWR) products. It occurs in various materials such as aluminium/titanium alloys, steels and plasticine at room or elevated temperatures, driven by different central cracking mechanisms. However, these mechanisms are still elusive, and a unified central cracking predictive model is absent due to the complex stress states within the workpiece, including triaxial stress states, cyclic loading and severe shear effects. In this study, the underlying fracture mechanisms were revealed, and a robust unified damage model with sound physical meanings was developed using a lab-scale CWR physical model and finite element models. The physical model with the plasticine billets was built, allowing the CWR dies with different geometries rapidly 3D printed and the billets with various ductility efficiently manufactured. The central cracking transiting from brittle to ductile fracture was experimentally observed for the first time using specifically designed plasticine/flour composite samples at varying ductility. The corresponding physics-based central cracking predictive model was proposed and validated quantitatively with 60 groups of CWR tests and compared with ten existing damage models/fracture criteria. This study effectively solves the long-lasting central cracking problem in the CWR industry and enhances the scientific understanding of fracture mechanics in complex engineering applications.

show abstract

“…Most scholars have used the single wedge-single pass model, based on rolling theory and fracture mechanics to indirectly analyze the generation mechanism and critical conditions of void formation as a function of mechanical parameters; however, during actual production, due to the complicated structure of rolled workpieces and the large amount of deformation they experience, multi-wedge combined multi-pass CWR is typically used. Material deformation is also sequential, and the rolling process factors interact with each other, making it difficult to determine the critical conditions of internal void formation using theoretical analysis in practical production [22][23][24][25]. When a company uses forging technology to produce connecting rods, CWR is used to create billets and internal voids form in the rolled products.…”

Section: Introductionmentioning

confidence: 99%

Influence of die parameters on internal voids during multi-wedge-multi-pass cross-wedge rolling

Jia

Ji²,

Wang

et al. 2020

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The formation of internal voids in workpieces during cross-wedge rolling affects die design and limits their widespread applications. This article investigated the formation of internal voids during the multi-wedge-multi-pass rolling production of connecting rods. A three-dimensional numerical simulation model of cross-wedge rolling (CWR) was established using the rigid-plastic finite element method, and a density change model of the porous material was developed to characterize the degree of internal void formation in the connecting rod during CWR. The optimal die parameters (forming angle, spreading angle, and distribution coefficient of area reduction) were determined by determining their relationship to the density. The stress and strain of characteristic points near the loose longitudinal sections were used to study the void formation mechanisms. The accuracy of the numerical simulations was verified by rolling experiments, which showed no void formation in the internal sections of the connecting rod after production, confirming the feasibility of using this scheme to prevent void formation.

show abstract

Influence of rolling temperature on interface properties of the cross wedge rolling of 42CrMo/Q235 laminated shaft

Cited by 29 publications

References 22 publications

Metallurgical Characterization of the Interfaces in Steel Plates Clad with Austenitic Steel or High Ni Alloys by Hot Rolling

Metallurgical Characterization of the Interfaces in Steel Plates Clad with Austenitic Steel or High Ni Alloys by Hot Rolling

Investigation and prediction of central cracking in cross wedge rolling

Influence of die parameters on internal voids during multi-wedge-multi-pass cross-wedge rolling

Contact Info

Product

Resources

About