scholarly journals Effects of Intercritical Annealing Temperature on Mechanical Properties of Fe-7.9Mn-0.14Si-0.05Al-0.07C Steel

Materials ◽  
2014 ◽  
Vol 7 (12) ◽  
pp. 7891-7906 ◽  
Author(s):  
Xianming Zhao ◽  
Yongfeng Shen ◽  
Lina Qiu ◽  
Yandong Liu ◽  
Xin Sun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Annealing Temperature ◽  
Intercritical Annealing ◽  
Intercritical Annealing Temperature

Effect of Intercritical Annealing Temperature on Martensite Amount for Dual-Phases Steel

2012 ◽  
Vol 548 ◽  
pp. 301-304 ◽  
Author(s):  
Fang Fang ◽  
Yun Yang Yin ◽  
Hui Wang ◽  
Cheng Jiang Lin
Keyword(s):  
Mechanical Properties ◽  
Theoretical Prediction ◽  
Thermodynamic Calculation ◽  
Annealing Temperature ◽  
Intercritical Annealing ◽  
Experimental Results ◽  
Calculated Temperature ◽  
Intercritical Annealing Temperature ◽  
Dp Steels

The theoretical prediction of intercritical annealing temperature for DP steels was conducted by thermodynamic calculation, which agreed to the experimental results. When annealed at 800°Caccording to the calculated temperature of 807°C by setting ratios of α:γ in 70:30, the amount of martensite was 13~18% and the mechanical properties achieved DP590 grade. There was at least 10% to 12% austenite transformed to new ferrite and martensite between intercritical annealing and overaging procedure.

scholarly journals Study on mechanical properties and microstructure of DP590 steel with different annealing process

2021 ◽  
Vol 245 ◽  
pp. 03009
Author(s):  
Libo Pan ◽  
Chengjiang Lin ◽  
Wenqiang Zhou ◽  
zhijiang Zuo
Keyword(s):  
Mechanical Properties ◽  
Aging Temperature ◽  
Annealing Temperature ◽  
Volume Fraction ◽  
Intercritical Annealing ◽  
Tensile Tests ◽  
Annealing Process ◽  
Dp Steel ◽  
Intercritical Annealing Temperature ◽  
Lower Volume

Annealing process is critical to mechanical properties and microstructure of DP steel. For DP steel with strength grade of 590MPa, experiments with different combinations of intercritical annealing temperature and over-aging temperature were carried out during annealing. The tensile tests of the final products and nanohardness tests of different phases were made, and the microstructures were analyzed. The results indicated that higher intercritical annealing temperature was favorable to higher volume fraction of martensite and lower nanohardness of martensite with lower C density. The ultimate tensile strength increased monotonously with the volume fraction of martensite increasing. Higher over aging temperature would make martensite islands be partially resolved and carbides precipitate, which made lower volume fraction of martensite, and resulted in lower nanohardness of martensite. The revealed rules could provide important guide to control material properties of DP steel by manipulating annealing process.

The Effects of Intercritical Annealing Temperature and Initial Microstructure on the Stability of Retained Austenite in a 0.1C-6Mn Steel

2016 ◽  
Vol 879 ◽  
pp. 1847-1852 ◽  
Author(s):  
Katharina Steineder ◽  
Daniel Krizan ◽  
Reinhold Schneider ◽  
Coline Beal ◽  
Christof Sommitsch
Keyword(s):  
Mechanical Properties ◽  
Retained Austenite ◽  
Annealing Temperature ◽  
Intercritical Annealing ◽  
Strong Dependence ◽  
Tensile Tests ◽  
Initial Microstructure ◽  
Intercritical Annealing Temperature ◽  
Batch Annealing ◽  
The Stability

The effects of the intercritical annealing temperature and initial microstructure on the stability of retained austenite were investigated for a 0.1C-6Mn (wt-%) steel. Medium-Mn transformation-induced plasticity (TRIP) steels exhibit a strong dependence of their mechanical properties on the variation of intercritical annealing temperature. This behavior is strongly linked to the amount and stability of the retained austenite. Thus, interrupted tensile tests were used to examine the effect of annealing temperature on the stabilization of the retained austenite. Detailed microstructural investigations were employed to elaborate the effects of its chemical and mechanical stabilization. Furthermore, the final microstructure was varied by applying the batch annealing step to an initial non-deformed and deformed microstructure respectively. Retained austenite stability along with resulting mechanical properties of the investigated medium-Mn TRIP steel was significantly influenced as the amount and morphology of the respective phases altered as a consequence of both initial microstructure and applied intercritical annealing temperature.

Sign in / Sign up

Export Citation Format

Share Document