Advanced   Register
IMR OpenIR  > 中国科学院金属研究所  > 期刊论文

题名: Low-cycle fatigue properties and life prediction of Al-Si piston alloy at elevated temperature
作者: Wang, M.;  Pang, J. C.;  Li, S. X.;  Zhang, Z. F.
发表日期: 2017-9-17
摘要: The influences of temperature on the microstructure evolution, tensile properties, especially low-cycle fatigue (LCF) behaviors and damage mechanisms of Al-Si piston alloy have been investigated in this paper. The results show that the alloy exhibits cyclic softening at high-temperature. Fatigue cracks usually initiate from primary silicon phase and preferentially grow along particles in a slightly zigzag path at relatively low temperature. With temperature increasing, however, the ductile tearing fracture through micro-cracks can be found. In order to evaluate the fatigue life, considering the temperature and loading conditions, a comprehensive 3-parameter model based on hysteresis energy has been proposed; at a constant temperature the fatigue life can be controlled by two parameters, i.e., the intrinsic fatigue toughness W-0 (the resistance to crack propagation) and the fatigue cracking exponent beta (the resistance to fatigue cracking), which dominate the LCF damage mechanisms (from fatigue-induced particle cracking to rapid fatigue crack growth). For the current Al-Si alloy, the combined effect of W-0, beta and temperature T can lead to an optimal fatigue life at a critical temperature. This model provides a new clue for optimizing and designing the high-temperature materials.
Appears in Collections:中国科学院金属研究所_期刊论文

Files in This Item:

There are no files associated with this item.

Recommended Citation:
Wang, M.,Pang, J. C.,Li, S. X.,et al. Low-cycle Fatigue Properties And Life Prediction Of Al-si Piston Alloy At Elevated Temperature[J]. Elsevier Science Sa,2017,704:480-492.

SCI Citaion Data:
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Wang, M.]'s Articles
 [Pang, J. C.]'s Articles
 [Li, S. X.]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Wang, M.]‘s Articles
 [Pang, J. C.]‘s Articles
 [Li, S. X.]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to  Add to Digg  Add to Reddit 
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院金属研究所  -Feedback
Powered by CSpace