Acta Metall Sin  1996, Vol. 32 Issue (8): 834-838    DOI:

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EFFECTS OF COTTRELL ATMOSPHERE ON INITIAL YIELD STRESS AND FATIGUE THRESHOLD OF STEEL 20CrMO

LUO Jingxi; TONG Mingxin(State Key Laboratory for Mechanical Behaviour of Materials; Xi'an Jiaotong University; Xi'an 710049)(Manuscript received 1995-10-20; in revised form 1996-02-02)

LUO Jingxi; TONG Mingxin(State Key Laboratory for Mechanical Behaviour of Materials; Xi'an Jiaotong University; Xi'an 710049)(Manuscript received 1995-10-20; in revised form 1996-02-02). EFFECTS OF COTTRELL ATMOSPHERE ON INITIAL YIELD STRESS AND FATIGUE THRESHOLD OF STEEL 20CrMO. Acta Metall Sin, 1996, 32(8): 834-838.

Abstract References Related Articles Recommended Metrics Download:  PDF(375KB)  Export:  BibTeX | EndNote (RIS)       Abstract  There are three types of yielding curves for steel 20CrMo tempered at 600, 450 and 200℃ after quanching, in which the first has upper and lower yield point, the second has yielding plateau but no upper yield point and the third is a continuous yielding. This paper studied the effects of Cottrell atmosphere on initial yield stress σ0(σ0.001) and fatigue threshold value △Ktn．The results show that, the Cottrell atmosphere still exists in the continuousyielding materials tempered at low temperature, yet the pinning strength of interstitial atoms on dislocations is weeker than that of the materials tempered at middle or high temperature.Both of σ0 and △Ktn is dropped greatly when depinning of interstitial atoms takes place.There is a good linear relation between △Ktn and σ0. Correspondent: LUO Jingxi,(State Key Laboratory for Mechanical Behaviour of Materials, Xi'an JiaotongUniversity, Xi'an 710049) Key words:  Cottrell atmosphere      initial yield stress      fatigue threshold value      steel 20CrMo      Received:  18 August 1996      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1996/V32/I8/834 1CottrellAH．TheRelationBetweentheStructureandMechanicalPropertiesofMetals．2nded,London:HerMajesty′sStationeryOffice,1963:4562LuoJingxi,TanYuxu．ActaMetallSin(EngLett),1995;8:1953LuoJingxi,TanYuxu．ActaMetallSin(EngLett),tobepublishedAlCottrellAH．TheRelationBetweentheStructureandMechanicalPropertiesofMetals．2nded,London:HerMajesty′sStationeryOffice,1963:456A2SnockJL,Physica,1941;8:711A3SnockG,SeegerA．ActaMetall,1959;7:469 [1] LI Weijuan, ZHANG Hengyi, FU Hao, ZHANG Jianping, QI Xiangyu. INTERNAL FRICTION STUDY OF MECHANISM OF BAKE-HARDENING ON LOW CARBON STEEL[J]. 金属学报, 2015, 51(4): 385-392. [2] WU Min;XU Yuehuang;SHEN Gongtian Wuhan University. INFLUENCE OF AGING ON SERRATED FLOW OF LC9 A1 ALLOY[J]. 金属学报, 1991, 27(5): 33-38. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed