Quan, G.-Z., Mao, Y.-P., Yu, C.-T., Lv, W.-Q., Zhou, J.
24485306400;55262591700;55567723500;55261309800;56510510800;
The flow behavior modeling of as-extruded 3Cr20Ni10W2 austenitic heat-resistant alloy at elevated temperatures considering the effect of strain
(2014) Materials Research, 17 (2), pp. 451-460. 被引用 4 次.
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84900452121&doi=10.1590%2fS1516-14392014005000016&partnerID=40&md5=5b736ff2f9733ab59fa11470cc1c644f

DOI: 10.1590/S1516-14392014005000016
归属机构: School of Material Science and Engineering, Chongqing University, Chongqing 400044, China
摘要: In order to investigate the compressive deformation behavior of 3Cr20Ni10W2 alloy, a series of isothermal upsetting experiments were carried out in the temperature range of 1203-1403 K and strain rate range of 0.01-10 s-1 on a Gleeble-1500 thermo-mechanical simulator. The results indicate that the flow stress initially increases to a peak value and then decreases gradually to a steady state. The characteristics of the curves are determined by the interaction of work hardening (WH), dynamic recovery (DRV) and dynamic recrystallization (DRX). The flow stress decreases with increasing temperature and decreasing strain rate. The relationship between microstructure and processing parameters is discussed to give an insight into the hot deformation behavior of 3Cr20Ni10W2 alloy. Then, by regression analysis for constitutive equation, material constants (n, α, β, A and Q) were calculated for the peak stress. Further, the constitutive equation along the flow curve was developed by utilizing an eighth order polynomial of strain for variable coefficients (including n, α, A and Q). The validity of the developed constitutive equation incorporating the influence of strain was verified through comparing the experimental and predicted data by using standard statistical parameters such as correlation coefficient (R) and average absolute relative error (AARE) that are 0.995 and 4.08% respectively.
作者关键字: 3Cr20Ni10W2 austenitic heat-resistant alloy;  Constitutive equation;  Flow stress;  Material constants;  Microstructure evolution
出版商: Universidade Federal de Sao Carlos
ISSN: 15161439
原始文献语言: English
来源出版物名称缩写: Mater. Res.
文献类型: Article
访问类型: Open Access
来源出版物: Scopus