采用Gleeble-3500热模拟机研究了06Cr25Ni20不锈钢在变形温度为950 ～1200℃,应变速率为0.5 ～50 s-1条件下的热压缩变形行为.通过线性回归分析确定06Cr25Ni20不锈钢的应变硬化指数以及变形表观激活能,获得06Cr25Ni20不锈钢高温条件下的流变应力本构方程,并验证该流变应力本构方程的准确性.研究结果表明,06Cr25Ni20不锈钢在热压缩变形过程中发生了明显的动态回复与动态再结晶,流变应力随应变速率的增加而增加,随温度升高而降低.
参考文献
| [1] | 牛济泰.材料与热加工领域的物理模拟技术[M].北京:国防工业出版社,1999:147. |
| [2] | 李佃国,尹法杰,李长荣.GH674高温合金的热变形行为[J].金属热处理,2005(08):5-7. |
| [3] | J.A.Del Valle;A.C. Picasso;I. Alvarez;R. Romero .Age-hardening behavior of Inconel X-750 superalloy[J].Scripta materialia,1999(3):237-243. |
| [4] | J. A. del Valle;R. Romero;A. C. Picasso .Bauschinger effect in age-hardened Inconel X-750 alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(1/2):100-107. |
| [5] | Ferreno D;Gorrochategui I;Sanchez L et al.Optimisation of heat treatment for improvement of IGSCC properties of Inconel X-750[J].ENGINEERING FAILURE ANALYSIS,2004,11:799-810. |
| [6] | G. Appa Rao;Mahendra Kumara;M. Srinivas .Effect of standard heat treatment on the microstructure and mechanical properties of hot isostatically pressed superalloy inconel 718[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):114-125. |
| [7] | 张辉,彭大暑,杨立斌,孟力平.铝合金多道次热轧流变应力的研究[J].热加工工艺,2000(05):6-8. |
| [8] | 吴文祥,孙德勤,曹春艳,王战锋,张辉.5083铝合金热压缩变流变应力行为[J].中国有色金属学报,2007(10):1667-1671. |
| [9] | 蔺永诚,陈明松,钟掘.42CrMo钢的热压缩流变应力行为[J].中南大学学报（自然科学版）,2008(03):549-553. |
| [10] | Sellars C M;Tegart W J M .On the mechanism of hot deformation[J].ACTA METALLURGICA,1997,13(03):210-216. |
| [11] | Zener C;Hollomon J H .Effect of strain rate upon the plastic flow of steel[J].Journal of Applied Geophysics,1944,15(01):22-32. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%