Details
| Original language | English |
|---|---|
| Title of host publication | Production at the leading edge of technology |
| Subtitle of host publication | Proceedings of the 10th Congress of the German Academic Association for Production Technology (WGP), Dresden, 23-24 September 2020 |
| Editors | Bernd-Arno Behrens, Alexander Brosius, Wolfgang Hintze, Steffen Ihlenfeldt, Jens Peter Wulfsberg |
| Pages | 142-150 |
| Number of pages | 9 |
| ISBN (electronic) | 9783662621387 |
| Publication status | Published - 25 Sept 2020 |
| Event | WGP Congress 2020 - Dresden, Germany Duration: 23 Sept 2020 → 24 Sept 2020 |
Publication series
| Name | Lecture Notes in Production Engineering |
|---|---|
| Publisher | Springer |
| ISSN (Print) | 2194-0525 |
| ISSN (electronic) | 2194-0533 |
Abstract
Thermomechanically treated (TMT) materials are characterized by a fine-grained microstructure, which leads to extraordinary mechanical properties. In this study, the alloyed tempering steel 42CrMo4 (AISI 4137) is used to set up a two-step TMT upsetting process with intermediate cooling. A water-air based cooling system was used to adjust different phase configurations between the two steps by varying the target temperature and cooling rate. Standardized test specimens for Charpy impact tests and tensile tests as well as for metallographic analyses are cut out of the formed parts. Tensile tests showed that the yield strength can be enhanced up to 1188 MPa while the elongation at break is about 12% without any additional heat treatment by forming the material after rapid cooling. This fulfills the demands of the standard in quenched and tempered state. This process route allows for local-load tailored part design and manufacturing by adjusting the forming conditions conveniently.
Keywords
- Forging, Mechanical properties, Thermomechanical treatment
ASJC Scopus subject areas
- Engineering(all)
- Safety, Risk, Reliability and Quality
- Economics, Econometrics and Finance(all)
- Economics, Econometrics and Finance (miscellaneous)
- Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
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Production at the leading edge of technology: Proceedings of the 10th Congress of the German Academic Association for Production Technology (WGP), Dresden, 23-24 September 2020. ed. / Bernd-Arno Behrens; Alexander Brosius; Wolfgang Hintze; Steffen Ihlenfeldt; Jens Peter Wulfsberg. 2020. p. 142-150 (Lecture Notes in Production Engineering).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Transfer
}
TY - GEN
T1 - Microstructure and Mechanical Properties of Thermomechanically Forged Tempering Steel 42CrMo4
AU - Diefenbach, Julian
AU - Brunotte, Kai
AU - Behrens, Bernd-Arno
N1 - Funding Information: Project “Improvement and identification of mechanical properties in forged parts by immediate post-forming after hot forging on different temperature levels by influencing microstructure of tempering steel” (359921546). The authors would like to thank the Deutsche Forschungsgemeinschaft (German Research Foundation, DFG) for the financial and organisational support of this project.
PY - 2020/9/25
Y1 - 2020/9/25
N2 - Thermomechanically treated (TMT) materials are characterized by a fine-grained microstructure, which leads to extraordinary mechanical properties. In this study, the alloyed tempering steel 42CrMo4 (AISI 4137) is used to set up a two-step TMT upsetting process with intermediate cooling. A water-air based cooling system was used to adjust different phase configurations between the two steps by varying the target temperature and cooling rate. Standardized test specimens for Charpy impact tests and tensile tests as well as for metallographic analyses are cut out of the formed parts. Tensile tests showed that the yield strength can be enhanced up to 1188 MPa while the elongation at break is about 12% without any additional heat treatment by forming the material after rapid cooling. This fulfills the demands of the standard in quenched and tempered state. This process route allows for local-load tailored part design and manufacturing by adjusting the forming conditions conveniently.
AB - Thermomechanically treated (TMT) materials are characterized by a fine-grained microstructure, which leads to extraordinary mechanical properties. In this study, the alloyed tempering steel 42CrMo4 (AISI 4137) is used to set up a two-step TMT upsetting process with intermediate cooling. A water-air based cooling system was used to adjust different phase configurations between the two steps by varying the target temperature and cooling rate. Standardized test specimens for Charpy impact tests and tensile tests as well as for metallographic analyses are cut out of the formed parts. Tensile tests showed that the yield strength can be enhanced up to 1188 MPa while the elongation at break is about 12% without any additional heat treatment by forming the material after rapid cooling. This fulfills the demands of the standard in quenched and tempered state. This process route allows for local-load tailored part design and manufacturing by adjusting the forming conditions conveniently.
KW - Forging
KW - Mechanical properties
KW - Thermomechanical treatment
UR - http://www.scopus.com/inward/record.url?scp=85166004593&partnerID=8YFLogxK
U2 - 10.1007/978-3-662-62138-7_15
DO - 10.1007/978-3-662-62138-7_15
M3 - Conference contribution
SN - 9783662621370
SN - 9783662621400
T3 - Lecture Notes in Production Engineering
SP - 142
EP - 150
BT - Production at the leading edge of technology
A2 - Behrens, Bernd-Arno
A2 - Brosius, Alexander
A2 - Hintze, Wolfgang
A2 - Ihlenfeldt, Steffen
A2 - Wulfsberg, Jens Peter
T2 - WGP Congress 2020
Y2 - 23 September 2020 through 24 September 2020
ER -