研究了Inconel 690合金在冷轧变形过程中的组织演变和形变强化规律.结果表明,在15%和20%形变量之间存在一个临界变形量,小于临界变形量时,加工硬化能力随着变形量的增加递减,真应力-真应变曲线可用 Ludwigson模型描述,位错运动主要是单系滑移,加工硬化主要来自位错的长程应力场.在临界变形量到40%变形量之间,加工硬化能力随着变形量的增加又增强,真应力-真应变曲线也可用Hollomon方程描述,位错运动出现了多滑移和交滑移,加工硬化主要是位错滑移和林位错交割的短程交互作用及孪晶对滑移的阻碍作用.
The effects of cold rolling on microstructure evolution and mechanical hardening of Inconel 690 alloy have been studied.There is a critical strain εL ranging between 15%and 20%,below which the hardening rate declines with increasing strain,the Ludwigson model is available to describe true stress-strain curve.Dislocation movement is mainly single system glide,and this work hardening mainly comes from the dislocation long-range stress field.From the critical strain to 40%deformation,the hardening rates increase with increasing strain,Hollomon model can be used to describe it,dislocation multi-slip and cutting appear,the work hardening niainly comes from shortrange stress field between dislocation glide and tree dislocation cutting,and the hindrance between dislocation glide and twin crystals.
参考文献
| [1] | 董秀哲;赵先存 .镍铬系列耐蚀合金的研究[J].钢铁研究总院学报,1984,4(01):1. |
| [2] | 董毅,高志远.我国核电事业的发展与Inconel 690合金的研制[J].特钢技术,2004(03):45-48. |
| [3] | 张红斌,李守军,胡尧和,谢锡善,王剑志.国外关于蒸汽发生器传热管用Inconel690合金研究现状[J].特钢技术,2003(04):2-11. |
| [4] | 陆世英;康喜范.镍基及铁镍基耐蚀合金[M].北京:化学工业出版社,1989 |
| [5] | 刘建章.核结构材料[M].北京:化学工业出版社,2007 |
| [6] | 丰涵,宋志刚,郑文杰,陈斌,季祥民.固溶处理对Inconel 690合金组织和力学性能的影响[J].钢铁研究学报,2009(03):46-50. |
| [7] | 刘素娥.690合金的成分和显微组织对腐蚀行为的影响[J].腐蚀科学与防护技术,1995(02):146. |
| [8] | 李强,周邦新.690合金的显微组织研究[J].金属学报,2001(01):8-12. |
| [9] | 王从曾.材料性能学[M].北京:北京工业大学出版社,2001 |
| [10] | 王松涛,杨柯,单以银,李来风.高氮奥氏体不锈钢与316L不锈钢的冷变形行为研究[J].金属学报,2007(02):171-176. |
| [11] | 余永宁.金属学原理[M].北京:冶金工业出版社,2005 |
| [12] | 田兴,田如锦,王爱宝.奥氏体不锈钢304L和304LN的加工硬化特点[J].大连铁道学院学报,2001(04):59-64. |
| [13] | LUDWIGSON D C .Modified Stress-Strain Relation for FCC Metals and Alloys[J].Metallurgical and Materials Transactions,1997,2(10):2825. |
| [14] | 刘树勋,刘宪民,刘蕤,王春旭,邢峰.0Cr21Ni6Mn9N奥氏体不锈钢的应变强化行为[J].钢铁研究学报,2005(04):40-44. |
| [15] | 周志敏.位错组态演化[M].沈阳:东北大学出版社,2003 |
| [16] | Woei-Shyan Lee;Chen-Yang Liu;Tai-Nong Sun .Deformation behavior of Inconel 690 super alloy evaluated by impact test[J].Journal of Materials Processing Technology,2004(0):219-225. |
| [17] | Woei-Shyan Lee;Chen-Yang Liu;Tai-Nong Sun .Dynamic impact response and micro structural evolution of inconel 690 superalloy at elevated temperatures[J].International journal of impact engineering,2005(1/4):210-223. |
| [18] | 李勇,李守新,李广义,杨继红.铜单晶驻留滑移带演化的实验观察与形成机制[J].自然科学进展,2001(06):625-630. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%