File(s) under permanent embargo
Application of a model for quenching and partitioning in hot stamping of high-strength steel
journal contribution
posted on 2018-04-01, 00:00 authored by B Zhu, Z Liu, Yanan WangYanan Wang, Bernard RolfeBernard Rolfe, L Wang, Y ZhangApplication of quenching and partitioning process in hot stamping has proven to be an effective method to improve the plasticity of advanced high-strength steels (AHSSs). In this study, the hot stamping and partitioning process of advanced high-strength steel 30CrMnSi 2 Nb is investigated with a hot stamping mold. Given the specific partitioning time and temperature, the influence of quenching temperature on the volume fraction of microstructure evolution and mechanical properties of the above steel are studied in detail. In addition, a model for quenching and partitioning process is applied to predict the carbon diffusion and interface migration during partitioning, which determines the retained austenite volume fraction and final properties of the part. The predicted trends of the retained austenite volume fraction agree with the experimental results. In both cases, the volume fraction of retained austenite increases first and then decreases with the increasing quenching temperature. The optimal quenching temperature is approximately 290 °C for 30CrMnSi 2 Nb with the partition conditions of 425 °C and 20 seconds. It is suggested that the model can be used to help determine the process parameters to obtain retained austenite as much as possible.
History
Journal
Metallurgical and materials transactions AVolume
49Issue
4Pagination
1304 - 1312Publisher
SpringerLocation
New York, N.Y.Publisher DOI
ISSN
1073-5623eISSN
1543-1940Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2018, The Minerals, Metals & Materials Society and ASM InternationalUsage metrics
Keywords
quenchingpartitioninghot stampinghigh-strength steelplasticityadvanced high-strengths steels (AHSSs)Science & TechnologyTechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringMaterials ScienceMECHANICAL-PROPERTIESMARTENSITE-TRANSFORMATIONINTERFACE MIGRATIONCARBONAUSTENITEBAINITEORTHOEQUILIBRIUMPARAEQUILIBRIUMMICROSTRUCTURESDEFINITIONSMechanical Engineering
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC