Paper Title:
The Micro-Mechanical Behavior of Inclusions under Tensile Load in X80 Pipeline Steel
  Abstract

In-situ tensile tests with specially designed SEM were conducted to trace the entire process of crack initiation and propagation till fracture in X80 pipeline steel. The mode of crack initiation induced by inclusions under tensile load was investigated. The results show that: (1) All the inclusions crazed and fracture was the typical tensile fracture, which indicates that the inclusions have little effect on the tensile properties of the X80 material under tensile load. (2) When the size of inclusion is larger than the critical size, crack initiated at inclusion/matrix interface first, and could easily propagate into matrix,but the long crack cannot form. When the size of inclusion is smaller than the critical size, cracks first formed in the inside of inclusions but not propagate into matrix. (3) If the area of cross section of round inclusion is less than 100μm2, crack initiated firstly in the inside of inclusion. If the area of cross section of round inclusion is larger than 100μm2, crack initiated firstly at the inclusion/matrix interface. For the rectangle inclusion, when its area of cross section is below 150μm2, cracks usually initiate in the center of inclusions.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
915-919
DOI
10.4028/www.scientific.net/AMR.189-193.915
Citation
K. Tong, S. H. Li, Y. P. Zeng, Q. Liu, X. L. Han, "The Micro-Mechanical Behavior of Inclusions under Tensile Load in X80 Pipeline Steel", Advanced Materials Research, Vols. 189-193, pp. 915-919, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yan Hua Zhao, Hua Zhang, Wei Dong
Abstract:The wedge splitting (WS) test is now a promising method to perform stable fracture mechanics tests on concrete-like quasi brittle materials....
425
  | Authors: Aylie Han, Buntara Sthenly Gan, Rudi Yuniarto, Anastasia Yesica, Rakhma Nurfitriani Editia
Chapter 3: Materials and Structures in Construction
Abstract:The stress-strain response of the basic concrete making material, i.e. the mortar and aggregates, are well known. In general, the aggregate...
113