Effect of initial microstructure on the creep behavior of TMCP EH36 and SM490C steels

Wang, S.H; Chiang, Chang-Hung; Chan, S.L.I.

doi:10.1016/s0921-5093(02)00425-2

Cited by 21 publications

(8 citation statements)

References 13 publications

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“…The proper course of the thermomechanical control process should involve thermally activated phenomena taking place both before and after hot plastic straining. Recommendations found in scientific publications concerned with the welding of steels subjected to the thermomechanical control process are only related to filler metals; hydrogen reduction in welds through the use of low-hydrogen welding processes; and the reduction of preheating temperature, which should be between 50 • C and 80 • C lower than that applied in relation to normalised and toughened steels and should not exceed 100 • C [7][8][9][10][11][12][13]. Most scientific publications about the weldability of steels subjected to the thermomechanical control process are concerned with materials characterised by a yield not exceeding 460 MPa.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Steel Subjected to the Thermomechanical Control Process with Respect to Weldability

Górka

2018

Metals

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Abstract:The study is concerned with the assessment of the weldability of steel S700MC subjected to the thermomechanical control process (TMCP) and precipitation hardening and characterised by a high yield point. Appropriate mechanical and plastic properties of steel S700MC were obtained using the thermomechanical control process through precipitation, solution, and strain hardening as well as by using grain-refinement-related processes. Constituents responsible for the hardening of steel S700MC include Ti, Nb, N, and C. The hardening is primarily affected by (Ti,Nb)(C,N)-type dispersive precipitates sized from several nanometres to between ten and twenty nanometres. The welding process considerably differs from TMCP conditions, leading to the reduction of plastic properties both in the heat-affected zone (HAZ) and in the weld area. This study demonstrates that in cases of TMCP steels, where the effect of precipitation hardening is obtained through titanium and niobium hardening phases, the carbon equivalent and phase transformation γ-α cannot constitute the basis of weldability assessment. The properties of welded joints made from the above-named group of steels are primarily affected by the stability of hardening phases, changes in their dispersion, and ageing processes. The most inferior properties were identified in the high-temperature and coarse-grained HAZ area, where the nucleation of hardening phases in the matrix and their uncontrolled reprecipitation in the fine-dispersive form lead to a sharp decrease in toughness.

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Section: Introductionmentioning

confidence: 99%

Assessment of Steel Subjected to the Thermomechanical Control Process with Respect to Weldability

Górka

2018

Metals

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“…For the high weld heat input of the FCB technology and the single-pass welding form, the melten WM has a high cooling rate and supercooling ratio. It resulted in the shrink of the primary ausinite and the second phase particles, as the martensite-austenite constituent (M-A) or the nonmetallic inclusions [11,12], seen in Fig. 3.…”

Section: Resultsmentioning

confidence: 99%

Investigation on the characterization and properties of EH36 steel FCB welded joint

Wang¹,

Jiang²,

Ma³

et al. 2017

Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)

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“…TMCP방법에 의한 구조용 강재의 제조결과는 조직의 조 밀성 강화에 따라 항복강도와 인장강도가 높아지는 경향 이 있다 (6) . 그러나 이러한 특성이 고온에 도달되었을 때의 변화에 대한 연구는 거의 없는 실정이다.…”

Section: 고온 기계적 특성 비교 평가unclassified

“…TMCP방법을 적용한 400 MPa5 00 MPa 수준의 특성 평가는 Wang, Zhuang, Porter 등의 연구 (6)(7)(8) 가 있고, 900 MPa 이상의 초고강도 TMCP 강재 개발은 Nie 등에 의해서 이루어지고 있다 (9) . …”

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Evaluation of Structural Stability of Fire Resistant Steel Produced by Thermo-Mechanical Control Process at High Temperature

Kwon

2013

Journal of Korean Institute of Fire Science and Engineering

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Fire resistance steel, grading 490 MPa, had developed by using Thermo-mechanical control process (TMCP) and it has better performance at welding, seismic resistance than those of the ordinary structural steel, But the fire resistance performance is required to verify against the ordinary fire resistance, FR 490. Therefore this study was done to make database of mechanical properties at high temperature and to evaluate the structural stability at high temperature in terms of materials and structural member such as H-section from that of FR 490. The result of this study was that the structural stability of TMCP was lower than that of ordinary FR 490 at the range up about 700 o C.

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Effect of initial microstructure on the creep behavior of TMCP EH36 and SM490C steels

Cited by 21 publications

References 13 publications

Assessment of Steel Subjected to the Thermomechanical Control Process with Respect to Weldability

Assessment of Steel Subjected to the Thermomechanical Control Process with Respect to Weldability

Investigation on the characterization and properties of EH36 steel FCB welded joint

Evaluation of Structural Stability of Fire Resistant Steel Produced by Thermo-Mechanical Control Process at High Temperature

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