为了研究主泵泵壳材料CF8在室温和350℃下的形变强化行为以及热老化对于料形变强化的影响,在恒应变速率控制模式下,通过对原始态和不同热老化时间后的试样进行室温和350℃下的准静态拉伸试验.结果表明,主泵泵壳材料CF8在拉伸过程中变形是不均匀的;随热老化时间延长,材料在室温和350℃的抗拉强度均不断提高,断后伸长率有所下降;在室温和350℃下的形变强化均呈阶段性,应变硬化指数在变形中逐渐增加,在第一阶段增幅最为明显.
参考文献
| [1] | IAEA-Tecdoc-540 .Safety aspects of nuclear power plant ageing[R].IAEA,1990. |
| [2] | Chung H M .Aging and life prediction of cast duplex stainless steel components[J].International Journal of Pressure Vessels and Piping,1992,50(01):179-213. |
| [3] | Iacoviello F;Casari F;Gialanella S .Effect of "475 ℃ embrittlement" on duplex stainless steels localized corrosion resistance[J].Corrosion Science,2005,47(04):909-922. |
| [4] | 刘鹏;薛飞;戴忠华.轻水堆核电站奥氏体不锈钢铸件的热老化及其老化管理[J].核动力工程,2005(z1):93-96. |
| [5] | I. Gutierrez-Urrutia;D. Raabe .Grain size effect on strain hardening in twinning-induced plasticity steels[J].Scripta materialia,2012(12):992-996. |
| [6] | D. Sarker;D.L. Chen .Detwinning and strain hardening of an extruded magnesium alloy during compression[J].Scripta materialia,2012(2):165-168. |
| [7] | Kookhyun Jeong;Jae-Eun Jin;Yeon-Seung Jung .The effects of Si on the mechanical twinning and strain hardening of Fe-18Mn-0.6C twinning-induced plasticity steel[J].Acta materialia,2013(9):3399-3410. |
| [8] | J.G. Eom;Y.H. Son;S.W. Jeong;S.T. Ahn;S.M. Jang;D.J. Yoon;M.S. Joun .Effect of strain hardening capability on plastic deformation behaviors of material during metal forming[J].Materials & design,2014(Feb.):1010-1018. |
| [9] | 张熹,王春旭,刘宪民,史庆南.18-18-0.5N高氮奥氏体不锈钢冷轧变形过程中的组织演变和形变强化[J].北京科技大学学报,2008(08):875-879. |
| [10] | 杨王玥,齐俊杰,孙祖庆,杨平.低碳钢形变强化相变的特征[J].金属学报,2004(02):135-140. |
| [11] | 杨卓越,王建,陈嘉砚.304奥氏体不锈钢热诱发马氏体相变研究[J].材料热处理学报,2008(01):98-101. |
| [12] | 邓丽萍,杨晓芳,HAN Ke,孙泽元,刘庆.Cu-Nb复合线材在形变与退火过程中显微结构演变的研究[J].金属学报,2014(02):231-237. |
| [13] | 杨钒,黄建龙.304奥氏体不锈钢应变诱发马氏体的研究[J].材料热处理学报,2012(03):104-109. |
| [14] | 刘江南,王正品,束国刚,石崇哲.P91钢的形变强化行为[J].金属热处理,2009(01):28-32. |
| [15] | 汪志福,孔韦海.应变速率对304奥氏体不锈钢应变硬化行为的影响[J].压力容器,2013(07):6-11. |
| [16] | 韦家虎,董建新,付书红,姚志浩,张麦仓.形变参数对GH4169合金热变形行为的影响[J].材料热处理学报,2013(07):58-64. |
| [17] | 刘劲松,袁兆静,张海燕,程明,张士宏.GH4169合金的高温变形行为[J].材料热处理学报,2012(10):41-44. |
| [18] | Marcelo Martins;Luiz Carlos Casteletti .Sigma phase morphologies in cast and aged super duplex stainless steel[J].Materials Characterization,2009(8):792-795. |
| [19] | Nrc U S .Safety evaluation of Westinghouse topical reports dealing with elimination of postulated pipe breaks in PWR primary main loops[R].Generic Lett,1984. |
| [20] | 谭洪锋,王萍,杨雷,李学涛,刘卫平.应变硬化指数n值与拉伸控制模式及拉伸速率关系的探讨[J].物理测试,2010(06):13-16. |
| [21] | 姜家旺,刘江南,薛飞,王正品,王毓,石崇哲.铸造双相不锈钢的形变强化[J].铸造技术,2007(03):350-353. |
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%