Impact of a multi-step heat treatment on different manufacturing routes of 18CrNiMo7-6 steel

Paranjayee Mandal; Maider Olasolo; Laurie Da Silva; Himanshu Lalvani

doi:10.1007/s11661-020-05728-x

Impact of a multi-step heat treatment on different manufacturing routes of 18CrNiMo7-6 steel

Paranjayee Mandal, Maider Olasolo, Laurie Da Silva, Himanshu Lalvani

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

24 Downloads (Pure)

Abstract

Effect of an optimized multi-step heat treatment routine on conventional (machining from wrought bar stock) and alternate manufacturing routes (hot forging and cold rotary forging) for producing flat cylindrical-shaped machine drive components from 18CrNiMo7-6 steel was investigated. The microstructure and mechanical properties of the final component manufactured using these three different routes were analyzed using optical microscopy, electron backscatter diffraction (EBSD), hardness testing, electro-thermal mechanical testing (ETMT), and rotary bending fatigue testing (RBFT) before and after implementing the multi-step heat treatment. It was found that the multi-step heat treatment transformed the as-received microstructure into the tempered martensitic microstructure, improving hardness, tensile, and fatigue properties. The heat treatment produced desired properties for the components manufactured by all three different routes. However the cold rotary forging, which is the most material utilizing route over the others, benefited the most from the optimized heat treatment.

Original language	English
Pages (from-to)	3009–3029
Number of pages	21
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	51
Issue number	6
Early online date	29 Mar 2020
DOIs	https://doi.org/10.1007/s11661-020-05728-x
Publication status	Published - 30 Jun 2020

Keywords

hot forging
cold rotary forging
heat treatment
microstructure
tensile properties
fatigue properties

Access to Document

10.1007/s11661-020-05728-xLicence: CC BY 4.0

Mandal-etal-MMTA-2020-Impact-of-a-multi-step-heat-treatment-on-differentFinal published version, 27.7 MBLicence: CC BY 4.0

Torotrak - Manufacturing core components
Mandal, P. (Researcher), Lalvani, H. (Researcher), Da Silva, L. (Researcher) & Michie, L. (Principal Investigator)
27/03/17 → 2/03/18
Project: Research

Heat Treat 2017
Mandal, P. (Speaker)
23 Oct 2017 → 26 Oct 2017
Activity: Participating in or organising an event types › Participation in conference

Cite this

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title = "Impact of a multi-step heat treatment on different manufacturing routes of 18CrNiMo7-6 steel",

abstract = "Effect of an optimized multi-step heat treatment routine on conventional (machining from wrought bar stock) and alternate manufacturing routes (hot forging and cold rotary forging) for producing flat cylindrical-shaped machine drive components from 18CrNiMo7-6 steel was investigated. The microstructure and mechanical properties of the final component manufactured using these three different routes were analyzed using optical microscopy, electron backscatter diffraction (EBSD), hardness testing, electro-thermal mechanical testing (ETMT), and rotary bending fatigue testing (RBFT) before and after implementing the multi-step heat treatment. It was found that the multi-step heat treatment transformed the as-received microstructure into the tempered martensitic microstructure, improving hardness, tensile, and fatigue properties. The heat treatment produced desired properties for the components manufactured by all three different routes. However the cold rotary forging, which is the most material utilizing route over the others, benefited the most from the optimized heat treatment.",

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AU - Mandal, Paranjayee

AU - Olasolo, Maider

AU - Da Silva, Laurie

AU - Lalvani, Himanshu

PY - 2020/6/30

Y1 - 2020/6/30

N2 - Effect of an optimized multi-step heat treatment routine on conventional (machining from wrought bar stock) and alternate manufacturing routes (hot forging and cold rotary forging) for producing flat cylindrical-shaped machine drive components from 18CrNiMo7-6 steel was investigated. The microstructure and mechanical properties of the final component manufactured using these three different routes were analyzed using optical microscopy, electron backscatter diffraction (EBSD), hardness testing, electro-thermal mechanical testing (ETMT), and rotary bending fatigue testing (RBFT) before and after implementing the multi-step heat treatment. It was found that the multi-step heat treatment transformed the as-received microstructure into the tempered martensitic microstructure, improving hardness, tensile, and fatigue properties. The heat treatment produced desired properties for the components manufactured by all three different routes. However the cold rotary forging, which is the most material utilizing route over the others, benefited the most from the optimized heat treatment.

AB - Effect of an optimized multi-step heat treatment routine on conventional (machining from wrought bar stock) and alternate manufacturing routes (hot forging and cold rotary forging) for producing flat cylindrical-shaped machine drive components from 18CrNiMo7-6 steel was investigated. The microstructure and mechanical properties of the final component manufactured using these three different routes were analyzed using optical microscopy, electron backscatter diffraction (EBSD), hardness testing, electro-thermal mechanical testing (ETMT), and rotary bending fatigue testing (RBFT) before and after implementing the multi-step heat treatment. It was found that the multi-step heat treatment transformed the as-received microstructure into the tempered martensitic microstructure, improving hardness, tensile, and fatigue properties. The heat treatment produced desired properties for the components manufactured by all three different routes. However the cold rotary forging, which is the most material utilizing route over the others, benefited the most from the optimized heat treatment.

KW - hot forging

KW - cold rotary forging

KW - heat treatment

KW - microstructure

KW - tensile properties

KW - fatigue properties

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Impact of a multi-step heat treatment on different manufacturing routes of 18CrNiMo7-6 steel

Abstract

Keywords

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Projects

Torotrak - Manufacturing core components

Activities

Heat Treat 2017

Cite this