Results 21 to 30 of about 59,361 (302)

RESISTANCE SPOT WELDING CHARACTERIZATION OF PRESS HARDENED STEEL [PDF]

open access: yesBlucher Physics Proceedings, 2017
في صناعة السيارات، يعد اللحام البقعي المقاوم (RSW) أحد أكثر العمليات استخدامًا لربط صفائح الصلب، نظرًا لأهميته الأساسية في ضمان جودة هذه العملية. في هذا العمل، تم ضم صفائح الصلب 22MnB5 لعملية الختم الساخن، والمعروفة أيضًا باسم PHS (فولاذ التصلب بالضغط)، بواسطة تقنية اللحام البقعي المقاوم، بحيث تم تغيير معلمات اللحام 16 مرة لتقييم تأثير هذه المعلمات على
L. Abbade   +5 more
openaire   +1 more source

Study of Patchwelded Blanks Resistance Spot Welding (RSW) Before Hot Stamping with and without Heat Treatment Parameters

open access: yesMaterials Research, 2023
In recent years, increasing automotive safety and energy efficiency has become a major concern in the automotive industry. Advanced high-strength steel (AHSS) was chosen for its weight reduction and high mechanical strength for the body in white (BIW ...
J. A. C. Lara   +4 more
doaj   +1 more source

A Method for Optimizing Chemical Composition of Steels to Reduce Radically Their Alloy Elements and Increase Service Life of Machine Components [PDF]

open access: yes, 2017
A method for optimizing chemical composition of steel is proposed and a correlation is established to reduce cardinally alloy elements in existing steel grades that results in high compressive residual stresses at the surface of intensively quenched ...
Kobasko, N. (Nikolai)
core   +2 more sources

Development of the Metal Rheology Model of High-temperature Deformation for Modeling by Finite Element Method [PDF]

open access: yes, 2019
It is shown that when modeling the processes of forging and stamping, it is necessary to take into account not only the hardening of the material, but also softening, which occurs during hot processing.
Aliieva, L. (Leila)   +3 more
core   +2 more sources

The Effect of Tempering on the Microstructure and Mechanical Properties of a Novel 0.4C Press-Hardening Steel

open access: yesApplied Sciences, 2019
In this paper, the effects of different tempering temperatures on a recently developed ultrahigh-strength steel with 0.4 wt.% carbon content were studied.
Oskari Haiko   +6 more
doaj   +1 more source

Designing Of Advanced And Original Austempering Processes Based On Thermal Science And Engineering Physics Approaches [PDF]

open access: yes, 2016
In the paper, a small concentration of inverse solubility polymers in water and other liquid media is recommended to eliminate film boiling by means of reducing initial heat flux density.
Kobasko, N. (Nikolai)
core   +2 more sources

Alloy Optimization for Reducing Delayed Fracture Sensitivity of 2000 MPa Press Hardening Steel

open access: yesMetals, 2020
Press hardening steel (PHS) is widely applied in current automotive body design. The trend of using PHS grades with strengths above 1500 MPa raises concerns about sensitivity to hydrogen embrittlement.
Hardy Mohrbacher, Takehide Senuma
doaj   +1 more source

Laser welding properties of 1800 MPa press hardening steel and low-alloy high-strength steel CR340LA

open access: yes工程科学学报, 2020
A laser tailor welding experiment of 1800 MPa press hardening steel and low-alloy high-strength steel CR340LA was carried out using an optical fiber laser.
Wen LIANG   +5 more
doaj   +1 more source

Laboratory studies of a high-strength roof bolting by means of self-extending mixtures [PDF]

open access: yes, 2019
Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods.
Isaienkov, O   +3 more
core   +1 more source

Comparison of Flow Behaviors at High Temperature of Two Press Hardening Boron Steels with Different Hardenability

open access: yesMetals, 2022
The deformation behavior and the constitutive description of materials are important in the design and numerical simulation of manufacturing processes.
Maria Emanuela Palmieri, Luigi Tricarico
doaj   +1 more source

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