对M951镍基高温合金光滑、三角形缺口试样分别在700,900℃下进行高周拉-拉疲劳试验(应力比R=1),并进行了断口形貌分析.结果表明:M951合金具有较好的高温高周疲劳性能；700℃时光滑和缺口试样的疲劳极限分别为320,294 MPa,合金在该温度下的缺口敏感性很小；900℃时光滑试样的疲劳极限为315 MPa,合金在该温度下没有缺口敏感性；光滑试样疲劳裂纹起源于由铸造缺陷和富钇的组织,其中前者引起的失效占全部失效试样的2/3；缺口试样的高周疲劳断口呈明显的多裂纹源性,应力集中是裂纹形成的主要原因.
参考文献
| [1] | S. A. Sajjadi;S. Nategh .A high temperature deformation mechanism map for the high performance Ni-base superalloy GTD-111[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(1/2):158-164. |
| [2] | 郭晓光,郭建亭,周兰章,杨洪才.铸造镍基高温合金K435室温旋转弯曲疲劳行为[J].东北大学学报（自然科学版）,2007(03):357-360. |
| [3] | 李志军,周兰章,郭建亭,姚俊.新型抗热腐蚀镍基高温合金K44的高温低周疲劳行为[J].中国有色金属学报,2006(01):136-141. |
| [4] | H. Vehoff;A. Nykyforchyn;R. Metz .Fatigue crack nucleation at interfaces[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):546-551. |
| [5] | P. Lukas;L. Kunz;M. Svoboda .High cycle fatigue of superalloy single crystals at high mean stress[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):505-510. |
| [6] | 连占卫,于金江,孙晓峰,管恒荣,胡壮麒.热处理对M951合金显微组织及拉伸性能的影响[J].稀有金属材料与工程,2008(05):798-802. |
| [7] | Lian, ZW;Yu, JJ;Sun, XF;Guan, HR;Hu, ZQ .Temperature dependence of tensile behavior of Ni-based superalloy M951[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):227-233. |
| [8] | Yu Jinjiang;Lian Zhanwei;Chu Zhaokuang;Sun Xiaofeng;Guan Hengrong;Hu Zhuangqi .Properties and microstructures of M951 alloy after long-term exposure[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(7/8):1896-1902. |
| [9] | 黄粮,孙晓峰,管恒荣,胡壮麒.定向凝固高温合金M951低压渗铝涂层的高温氧化及相变过程[J].腐蚀科学与防护技术,2005(01):34-38. |
| [10] | 杨富民,孙晓峰,管恒荣,胡壮麒.K40S钴基高温合金高温高周疲劳行为[J].中国有色金属学报,2003(01):141-146. |
| [11] | Zhou, P.J.;Yu, J.J.;Sun, X.F.;Guan, H.R.;He, X.M.;Hu, Z.Q..Influence of Y on stress rupture property of a Ni-based superalloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2012:236-240. |
| [12] | 王弘,高庆.缺口应力集中对40Cr钢高周疲劳性能的影响[J].机械工程材料,2004(08):12-14. |
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%