金属学报  1986, Vol. 22 Issue (5): 63-151

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定向凝固合金DK3的高温低周疲劳行为

谢济洲;刘绍伦;孙传琪;吴昌新

北京航空材料研究所;北京航空材料研究所;北京航空材料研究所;北京航空材料研究所

HIGH TEMPERATURE LOW CYCLIC FATIGUE BEHAVIOUR OF DIRECTIONALLY SOLIDIFIED Ni-BASE ALLOY DK3

XIE Jizhou; LIU Shaolun; SUN Chuanqi; WU Changxin (Institute of Aeronautical Materials; Beijing)

谢济洲;刘绍伦;孙传琪;吴昌新. 定向凝固合金DK3的高温低周疲劳行为[J]. 金属学报, 1986, 22(5): 63-151.
, , , . HIGH TEMPERATURE LOW CYCLIC FATIGUE BEHAVIOUR OF DIRECTIONALLY SOLIDIFIED Ni-BASE ALLOY DK3[J]. Acta Metall Sin, 1986, 22(5): 63-151.

摘要 参考文献 相关文章 Metrics 全文: PDF(1777 KB)   摘要: 研究了镍基定向凝固高温合金DK3和普通铸造合金K3在760℃应变控制和应力控制下的高温低周疲劳行为。结果表明:这两种合金的高温低周疲劳行为可以用常规的应力疲劳曲线来表征。DK3合金不存在“过渡疲劳寿命”N_T,K3合金则很低。在各种不同应变或应力水平下,DK3合金的低周疲劳寿命高于K3合金,当应力水平为785至980MPa时,其寿命约差1倍,当应力水平为490至685MPa时,则差2倍多。 Abstract：The high temperature low cyclic fatigue (LCF) behaviour of a directionally solidified Ni-base alloy DK3 has been studied under strain-controlled and stresscontrolled at 7600℃ in comparison with a conventional cast alloy K3. It was found that for both alloys, their behaviours may be characterized by the conventional stress fatigue curve. The intersections of elastic and plastic lines, so-called "transitional fatigue life", N_T, is absence for alloy DK3 and a little for K3. Under various strain and stress load, LCF life of alloy DK3 is longer than that of K3. When the stress level reduces from 980 to 785 MPa, the difference between the lives of both alloys is about 2 times; when stress level from 685 to 490 MPa, the difference increases more than 3 times. 收稿日期: 1986-05-18      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 谢济洲 刘绍伦 孙传琪 吴昌新 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I5/63 1 祝高祖编,十种铸造高温合金数据汇编,《航空材料》编辑部,1980． 2 Scarlin, R.B., Metall. Trans., 7A, (1976) , 1535． 3 Scarlin, R.B., Mater. Sci. Eng., 21 (1975) , 139． 4 Mowbary, D. F.; Woodford, D.A.; Brant, D.E., Am. Soc. Test. Mater., Spec. Tech. Publ. 520, (1973) , p. 416． 5 谢济洲,机械工程材料,6(1982) ,№ 6,15． 6 刘绍伦;谢济洲,航空材料专刊,1(1981) ,№ 1,50． 7 Coffin, L. F., Am. Soc. Test. Mater., Spec. Tech. Publ. 520, (1973) , pp. 5-34． 8 Annual Book of ASTM Standards, Part 10, 1980, pp. 711-728． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed