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Microstructure-property relationships of novel ultra-high strength press hardening steels

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Microstructure-property relationships of novel ultra-high strength press hardening steels. / Järvinen, Henri; Honkanen, Mari; Oja, Olli; Järvenpää, Martti ; Peura, Pasi.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 50, No. 2, 2019, p. 816-836.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Järvinen, H, Honkanen, M, Oja, O, Järvenpää, M & Peura, P 2019, 'Microstructure-property relationships of novel ultra-high strength press hardening steels', Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 50, no. 2, pp. 816-836. https://doi.org/10.1007/s11661-018-4967-7

APA

Järvinen, H., Honkanen, M., Oja, O., Järvenpää, M., & Peura, P. (2019). Microstructure-property relationships of novel ultra-high strength press hardening steels. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 50(2), 816-836. https://doi.org/10.1007/s11661-018-4967-7

Vancouver

Järvinen H, Honkanen M, Oja O, Järvenpää M, Peura P. Microstructure-property relationships of novel ultra-high strength press hardening steels. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 2019;50(2):816-836. https://doi.org/10.1007/s11661-018-4967-7

Author

Järvinen, Henri ; Honkanen, Mari ; Oja, Olli ; Järvenpää, Martti ; Peura, Pasi. / Microstructure-property relationships of novel ultra-high strength press hardening steels. In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 2019 ; Vol. 50, No. 2. pp. 816-836.

Bibtex - Download

@article{f27d718f87e44d8aaeb6b63f68baf03c,
title = "Microstructure-property relationships of novel ultra-high strength press hardening steels",
abstract = "The industrial significance of microalloyed martensitic steels manufactured via cold rolling, reaustenitization, and quenching has been typically recognized as low. However, it is currently believed that microalloying can improve the in-service properties of ultra-high-strength press hardening steels. In this work, five 34MnB5-based steels were designed to address the role of Ti and V when combined with Cr or Mo. Microstructure-property relationships were analyzed after die quenching and additional bake hardening (BH) heat treatment using advanced methods of microscopy, glow discharge optical emission spectroscopy, quasi-static tensile tests, and three-point bending tests. Results indicate that both Ti and V can provide grain size refinement through the formation of stabile nanosized precipitates. The BH treatment improved postuniform elongation values, indicating a trend of improved ductility. However, the expected improvements in bendability were clearly confirmed only for two V-microalloyed steels with the alloying concepts of 0.3Cr-0.15V-0.03Al-0.02Ti-0.0020B and 0.3Mo-0.15V-0.0060N (without Al-Ti-B additions) (wt pct). Thus, it was discovered that microalloying with V, when combined with either Cr or Mo, provides a promising combination of mechanical properties as far as the austenitization parameters are appropriately controlled.",
keywords = "Press hardening, Bake hardening, Martensite, EBSD, TEM, Mechanical behavior",
author = "Henri J{\"a}rvinen and Mari Honkanen and Olli Oja and Martti J{\"a}rvenp{\"a}{\"a} and Pasi Peura",
year = "2019",
doi = "10.1007/s11661-018-4967-7",
language = "English",
volume = "50",
pages = "816--836",
journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",
issn = "1073-5623",
publisher = "ASM International",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Microstructure-property relationships of novel ultra-high strength press hardening steels

AU - Järvinen, Henri

AU - Honkanen, Mari

AU - Oja, Olli

AU - Järvenpää, Martti

AU - Peura, Pasi

PY - 2019

Y1 - 2019

N2 - The industrial significance of microalloyed martensitic steels manufactured via cold rolling, reaustenitization, and quenching has been typically recognized as low. However, it is currently believed that microalloying can improve the in-service properties of ultra-high-strength press hardening steels. In this work, five 34MnB5-based steels were designed to address the role of Ti and V when combined with Cr or Mo. Microstructure-property relationships were analyzed after die quenching and additional bake hardening (BH) heat treatment using advanced methods of microscopy, glow discharge optical emission spectroscopy, quasi-static tensile tests, and three-point bending tests. Results indicate that both Ti and V can provide grain size refinement through the formation of stabile nanosized precipitates. The BH treatment improved postuniform elongation values, indicating a trend of improved ductility. However, the expected improvements in bendability were clearly confirmed only for two V-microalloyed steels with the alloying concepts of 0.3Cr-0.15V-0.03Al-0.02Ti-0.0020B and 0.3Mo-0.15V-0.0060N (without Al-Ti-B additions) (wt pct). Thus, it was discovered that microalloying with V, when combined with either Cr or Mo, provides a promising combination of mechanical properties as far as the austenitization parameters are appropriately controlled.

AB - The industrial significance of microalloyed martensitic steels manufactured via cold rolling, reaustenitization, and quenching has been typically recognized as low. However, it is currently believed that microalloying can improve the in-service properties of ultra-high-strength press hardening steels. In this work, five 34MnB5-based steels were designed to address the role of Ti and V when combined with Cr or Mo. Microstructure-property relationships were analyzed after die quenching and additional bake hardening (BH) heat treatment using advanced methods of microscopy, glow discharge optical emission spectroscopy, quasi-static tensile tests, and three-point bending tests. Results indicate that both Ti and V can provide grain size refinement through the formation of stabile nanosized precipitates. The BH treatment improved postuniform elongation values, indicating a trend of improved ductility. However, the expected improvements in bendability were clearly confirmed only for two V-microalloyed steels with the alloying concepts of 0.3Cr-0.15V-0.03Al-0.02Ti-0.0020B and 0.3Mo-0.15V-0.0060N (without Al-Ti-B additions) (wt pct). Thus, it was discovered that microalloying with V, when combined with either Cr or Mo, provides a promising combination of mechanical properties as far as the austenitization parameters are appropriately controlled.

KW - Press hardening

KW - Bake hardening

KW - Martensite

KW - EBSD

KW - TEM

KW - Mechanical behavior

U2 - 10.1007/s11661-018-4967-7

DO - 10.1007/s11661-018-4967-7

M3 - Article

VL - 50

SP - 816

EP - 836

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

SN - 1073-5623

IS - 2

ER -