Paper Information

Journal:   INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)   FALL 2006 , Volume 17 , Number 3; Page(s) 9 To 15.
 
Paper: 

EFFECT OF CHEMICAL COMPOSITION ON TEMPER EMBITTERMENT SENSITIVITY OF LOW ALLOY CR-MO STEELS

 
 
Author(s):  ABD ALMALEKI ALI REZA, ARABI H., MIRDAMADI SH.A.D., RAHMANIAN MORTEZA
 
* 
 
Abstract: 

Contradicted results have been reported on sensitivity of low alloy Cr-Mo steels to fracture toughness, so it seems further investigations is required in order to establish the reasons for this contradiction. This study rationalized the causes of contradiction and established the reason of variation in the observed changes in fracture toughness which is related strongly to chemical compositions of these type of steels.
For investigating the embrittlement sensitivity in this research, J- factor was used. The higher the J-Factor in steel, the more sensitive it would be to temper embrittleing. Two types of low alloy Cr-Mo steels having different compositions and J-Factors (i.e. equivalent to 107 and 224) were used in this research. For induction of temper embrittlment on these alloys, a Step-Cooling operation from high temperature to room temperature for a period of 234 hours was employed. Then the mechanical properties of the treated and untreated alloys were established and compared. The results show that in spite of the small effect of Step-Cooling operation on tensile and hardness properties of the steels, resistance to impact of both alloys was affected by temper embrittlement. Changes in temper embrittlemel1tof the two alloys used in this research are justified in this article.

 
Keyword(s): 
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 68
 
Latest on Blog
Enter SID Blog