金属学报  1984, Vol. 20 Issue (2): 83-210

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用控制柔度法研究高温低循环疲劳裂纹扩展规律

王栓柱;迟书耀;耿刚强

西安航空发动机厂;西安航空发动机厂;西安公路学院

INVESTIGATION ON LCF CRACK GROWTH RATE WITH CONTROLLING DEFLECTION AT HIGH TEMPERATURE

by WANG Shuanzhu; CHI Shuyao (Xi'an Aeroengine Factory); GENG Gangqiang (Xi'an Highway Institute) (Manuscript received 3 October; 1982; revised manuscript 5 August; 1983)

王栓柱;迟书耀;耿刚强. 用控制柔度法研究高温低循环疲劳裂纹扩展规律[J]. 金属学报, 1984, 20(2): 83-210.
, , . INVESTIGATION ON LCF CRACK GROWTH RATE WITH CONTROLLING DEFLECTION AT HIGH TEMPERATURE[J]. Acta Metall Sin, 1984, 20(2): 83-210.

摘要 参考文献 相关文章 Metrics 全文: PDF(1522 KB)   摘要: 本文采用控制柔度的方法对GH36合金做600℃空气介质条件下的低循环疲劳裂纹扩展速率测定试验,以弹塑性断裂力学参量J积分为控制参数进行整理,得出 da/dN=1.26×10.(-4)(△J)~(1.96)的关系式,数据处理给出了在循环加载条件下J积分(AJ_t,△J_e,△J_p)对引伸仪标距点位移δ的变化规律。分析了应力强度因子△K作为裂纹扩展控制变量的适用性和局限性。断口分析表明,在疲劳—蠕变交互作用下的积累损伤使断口形貌由穿晶条纹机制变为以蠕变特征为主的沿晶机制。 Abstract：The low cyclic fatigue (LCF) crack growth rate was measured by means of controlling deflection on a superalloy at 600℃ in open air. The parameter of elastic-plastic fracture mechanics, J-integral was chosen as controlling variable and the relation dα/dN=1.26×10~(-4)(△J)~(1.96) was obtained. It was pointed that how J-integral (△J_t, △J_e, △J_p) varied versus deflection δ within gage length in cyclic loading. The suitableness and limitation were discussed on stress intensity factor △K as controlling variable of a crack growth. Fracture analysis showed that accumulative damage under creep/fatigue interaction made the fracture morphology changed from transgranular striation to intergranular mechanism which characterizes creep fracture. 收稿日期: 1984-02-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王栓柱 迟书耀 耿刚强 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1984/V20/I2/83 1 Chell, G. G., Colloquium on Fracture, 3rd Fracture & Fatigue, Elasto-Plasticity, Thin-Sheet and Micro-Mechanism Problems, London, 1980, p3-12． 2 Muscati, A., Fracture, 3(1977) , 149． 3 Dowling, N. E., Mechanics of Crack Growth, ASTM, STP, 590,(1976) , p. 82-103． 4 Schwalbe, K. H.; Hellman, D., J. Test. Eval., 9(1981) ,№. 3, 218． 5 Rice, J. R., Progress in Flaw Growth and Fracture Toughness, ASTM, STP, 536, (1973) , p. 231． 6 大路清嗣;小仓敬二:久保司郎,机械の研究,31(1979) ,№.1,33． 7 Dowling, N. E., Crack and Fracture, ASTM, STP 601, (1976) , p. 19-32． 8 Fedderson, C. E., Discussion in Planstrain Crack Toughness Testing of Metallic Materials, ASTM, STP, 410, (1973) , p. 77． 9 陈箎:蔡其巩:王仁智,工程断裂力学,(上册),国防工业出版社,1979,p.368． 10 平修二;田中啓介,小川茂,材料,26(1977) ,№.280,p.93． 11 刘绍伦;谢济洲;未发表资料,1981． 12 Wang Shaunzhu; Yank Cheng; Kang Maokung, Eng. Frac. Mech., 4(1983) . 13 Mowbray, D. E., Crack and Fracture, ASTM, STP, 601, (1976) , p 33． 14 Gabrielli, F.; Pelloux, R. N., Metall. Trans., 13A(1982) , 1083． 15 Chen, I-W; Argon, A. S., Acta Metall., 29(1981) , 1321． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed