Precipitation development simulation of high-temperature carburization along the process chain

被引：2

作者：

Konovalov, S. ^{[1
]}

Prahl, U. ^{[1
]}

Kohlmann, R. ^{[1
]}

Kozeschnik, E. ^{[1
]}

Bleck, W. ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Eisenhuttenkunde, Aachen, Germany

来源：

HTM-JOURNAL OF HEAT TREATMENT AND MATERIALS | 2011年 / 66卷 / 04期

关键词：

HT case hardening; precipitation; MatCalc; process chains; simulation; pinning-force;

D O I：

10.3139/105.110110

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The specific addition of microalloying elements allows realization of carburization annealing at high temperatures. These microalloying additions are used for precipitation hardening and for the increase of fine grain stability by particle pinning during high-temperature carburization. In this work the precipitation evolution along an exemplary process chain for the microalloyed steel 25MoCr4 for transmission components is analyzed using STEM and EFTEM and modeled using the software MatCalc. The process chain consists of a FP-annealing, a cold forming, an additional FP-annealing followed by the carburizing process at a temperature of 1050 degrees C. By comparing the experimental and numerical simulation results the simulation chain can be validated and the influence of different microalloyed precipitates on the Zener force can be quantified. Based on this validated model, simulations are carried out for different process chains and the influence on the Zener force and therefore on the fine grain stability is calculated. Thus, optimization hints have been formulated for the process chain.

引用

页码：217 / 228

页数：12

共 50 条

[41] The development of the high-temperature reactor
Barnert, H
Haag, G
Kugeler, K
Scherer, W
ATW-INTERNATIONALE ZEITSCHRIFT FUR KERNENERGIE, 1996, 41 (8-9): : 552 - 556
[42] DEVELOPMENT OF HIGH-TEMPERATURE TRANSDUCERS
HARRIS, RV
MATERIALS EVALUATION, 1976, 34 (09) : P8 - P8
[43] DEVELOPMENT OF HIGH-TEMPERATURE REACTORS
FEIGENSPAN, B
KERNENERGIE, 1976, 19 (02): : 41 - 46
[44] DEVELOPMENT OF HIGH-TEMPERATURE VISCOMETER
HEPWORTH, MT
HOMA, TR
RUUD, CO
JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1974, 7 (07): : 539 - 542
[45] Simulation of High-Temperature Drying of Wood
Nabhani, M.
Laghdir, A.
Fortin, Y.
DRYING TECHNOLOGY, 2010, 28 (10) : 1142 - 1147
[46] HIGH-TEMPERATURE SIMULATION OF DYNAMICS OF CYCLOHEXANE
KAWAI, T
TOMIOKA, N
ICHINOSE, T
TAKEDA, M
ITAI, A
CHEMICAL & PHARMACEUTICAL BULLETIN, 1994, 42 (06) : 1315 - 1321
[47] Analysis of the precipitation process of the intermetallic phases in a high-temperature Fe-Ni austenitic alloy
Ducki, KJ
Hetmanczyk, M
Kuc, D
MATERIALS CHEMISTRY AND PHYSICS, 2003, 81 (2-3) : 490 - 492
[48] Karl Schnell Research and development along the process chain
不详
FLEISCHWIRTSCHAFT, 2023, 103 (03): : 62 - 62
[49] Degradation of mechanical strength of pyrolysis furnace tubes by high-temperature carburization in a petrochemical plant
Tawancy, H. M.
ENGINEERING FAILURE ANALYSIS, 2009, 16 (07) : 2171 - 2178
[50] The process of high-temperature pitch production
Vostochnyj Uglekhimicheskij Inst, Ekaterinburg, Russia
Koks Khim, 8 (29-32):

← 1 2 3 4 5 →