WARM DEFORMATION BEHAVIOR OF A 65MN SPRING STEEL
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Published:2021-09-30
Issue:5
Volume:55
Page:
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ISSN:1580-3414
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Container-title:Materiali in tehnologije
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language:
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Short-container-title:Mater. Tehnol.
Author:
Zhang Peng-fei,Wang De-cheng,Cheng Peng,Shao Chen-xi,Zhou Jun-ying,Huang Ji-hua
Abstract
The warm deformation behavior of 65Mn spring steel has been carried out by a thermomechanical simulator. The deformation temperatures are in the range of 550 ~ 700℃ and strain rates are in the range of 0.001 ~ 1 s-1. The deformation activation energy is calculated to be 486.829 KJ•mol-1. The strain compensated Arrhenius-type constitutive model was established. The relationship materials constants and strain were fitted with an 8th order polynomial. It was found that the strain has a significant influence on the instability map. At the strain is 0.3, the optimum flow zone may take place with the deformation temperatures higher than 626 ℃ and strain rate in the range of 0.001 ~ 1 s-1.
Publisher
Institute of Metals and Technology
Subject
Metals and Alloys,Polymers and Plastics