Mechanical Properties and Microstructure of High-Strength Steel Controlled by Hot Stamping Process

Ou, Hang; Zhang, Xu; Xu, Junrui; Li, Guangyao; Cui, Junjia

doi:10.1007/s11665-018-3290-1

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…Large, medium and small dies for die forming are currently represented by dies for separating operations (cutting, punching, trimming) [6]; dies for bending, flanging [7]; dies for forming operations (drawing, molding) [8]; dies of combined and sequential action [9]. High temperature die tools undergo various loads [10] and the nature and intensity of these loads vary significantly in different parts of the working surface [11]. Today, repair of die tooling implies mostly restoration of the geometry lost in the process of operating the equipment with materials similar in composition to the tooling material [12].…”

Section: Introductionmentioning

confidence: 99%

Improving die tooling properties by spraying TiC-Ti-Al and TiB₂-Ti-Al electro-explosive coatings

Романов

2020

Mater. Res. Express

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This article describes increasing wear resistance of 5CrNiMo die steel by more than 5 times. This effect is achieved by creating TiC-Ti-Al and TiB 2 -Ti-Al coatings on the surface of 5CrNiMo die steel. The microhardness of the formed coatings depends on which part of the structure is measured. The microhardness differs by more than 12 times in the matrix material and in the inclusions of titanium carbides and borides. However, the combination of metal matrix composites and the reinforcing inclusions suggests a high complex of properties of the formed coatings. The formation of wearresistant coatings of these systems is carried out by two-stage treatment. At the first stage, electroexplosive spraying of TiC-Ti-Al or TiB 2 -Ti-Al coatings is performed. At the second stage, electronbeam treatment of these coatings is carried out. The structure uniformity during electro-explosive spraying is enforced by specially designed composite conductors, which are electrically exploded. The reason for wear resistance increase is the formation of a multiphase finely dispersed structure in coatings based on TiC, Al 3 Ti, Ti and Ti 3 Al phases for TiC-Ti-Al system and TiB 2 , TiB and AlTi 3 phases for TiB 2 -Ti-Al system. The structure was also studied in detail at the interface between the coatings and the substrate using transmission electron microscopy. The studies of the structure of electroexplosive coatings were compared with the structural features of TiC-Ti-Al composite coatings obtained by the laser cladding technique on the surface of TiAl alloy. Comparison of the findings of the structure obtained by these two different spraying methods revealed both general patterns and characteristic features for each of the coating methods. They relate to features at the interface between the coatings and the substrate, as well as characteristic unitary coating layers.

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Section: Introductionmentioning

confidence: 99%

Improving die tooling properties by spraying TiC-Ti-Al and TiB₂-Ti-Al electro-explosive coatings

Романов

2020

Mater. Res. Express

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Analysis of high strength characteristics of aluminized quenchable boron steel (22MnB5) using groove pattern on the hot stamping die surface

Park,

Kong,

Park

et al. 2024

Int J Adv Manuf Technol

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Experimental and Numerical Analysis on Dual Phase Steel (DP780) Sheet Forming Limit and Effect of Microstructure Evolution on Formability

Bhargava

Barnwal

Chakrabarty

et al. 2020

J. of Materi Eng and Perform

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Mechanical Properties and Microstructure of High-Strength Steel Controlled by Hot Stamping Process

Cited by 5 publications

References 18 publications

Improving die tooling properties by spraying TiC-Ti-Al and TiB₂-Ti-Al electro-explosive coatings

Improving die tooling properties by spraying TiC-Ti-Al and TiB₂-Ti-Al electro-explosive coatings

Analysis of high strength characteristics of aluminized quenchable boron steel (22MnB5) using groove pattern on the hot stamping die surface

Experimental and Numerical Analysis on Dual Phase Steel (DP780) Sheet Forming Limit and Effect of Microstructure Evolution on Formability

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Mechanical Properties and Microstructure of High-Strength Steel Controlled by Hot Stamping Process

Cited by 5 publications

References 18 publications

Improving die tooling properties by spraying TiC-Ti-Al and TiB2-Ti-Al electro-explosive coatings

Improving die tooling properties by spraying TiC-Ti-Al and TiB2-Ti-Al electro-explosive coatings

Analysis of high strength characteristics of aluminized quenchable boron steel (22MnB5) using groove pattern on the hot stamping die surface

Experimental and Numerical Analysis on Dual Phase Steel (DP780) Sheet Forming Limit and Effect of Microstructure Evolution on Formability

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Improving die tooling properties by spraying TiC-Ti-Al and TiB₂-Ti-Al electro-explosive coatings

Improving die tooling properties by spraying TiC-Ti-Al and TiB₂-Ti-Al electro-explosive coatings