不同加载频率下镍高温合金的低周疲劳

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING Russian Metallurgy (Metally) Pub Date : 2025-01-08 DOI:10.1134/S003602952470085X

P. V. Ryzhkov, M. A. Gorbovets, I. A. Khodinev

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引用次数: 0

摘要

研究了低周区（f = 1 ~ 3 Hz， N≤105次）变形频率对镍高温合金疲劳寿命特性的影响。试验在25℃和700℃的应变控制加载条件下进行。在高温下，变形频率对疲劳寿命的影响最为显著。断裂特征的主要区别在于，随着加载频率的增加，断裂面起伏更平坦，疲劳裂纹前缘更长。

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Low-Cycle Fatigue of a Nickel Superalloy at Various Loading Frequencies

The influence of the deformation frequency in a low-cycle region (f = 1–3 Hz, N ≤ 10⁵ cycles) on the fatigue life characteristics of a nickel superalloy has been studied. Tests are performed under strain-controlled loading conditions at temperatures of 25 and 700°C. The influence of the deformation frequency on the fatigue life is found to be most significant at an elevated temperature. The main difference in the character of fracture consists in a flatter fracture surface relief and a longer fatigue crack front at an increased loading frequency.

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来源期刊

Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

0.70

自引率

25.00%

发文量

140

期刊介绍： Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.