The effect of tempering and strain aging processes on the mechanical properties of AISI H10 hot work tool steel
Küçük Resim Yok
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gazi Univ, Fac Engineering Architecture
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study microstructure and mechanical properties of AISI H10 hot work tool steel austenitised at 1050 degrees C for 1 hour and then cooled in water followed by tempering at 550 degrees C for different time intervals were investigated. In addition, the dynamic strain aging behavior of the samples tempered at 550 degrees C for 2 hours, where optimum parameters were obtained, was investigated. In the aging process, tensile tests were carried out at a temperature range of 25-700 degrees C and at a strain rate of 1x10(-3) s(-1). SEM analyzes were performed on the fractured samples after the tensile test in order to determine the effect of dynamic strain ageing on fracture behavior. The tensile test results indicated that tempered samples showed an increase in yield strength (YS) and ultimate tensile strength (UTS) but elongation remained constant at 200 degrees C or 300 degrees C consistent with dynamic strain aging. It is believed that dynamic strain ageing occurs in AISI H10 hot work tool steel at different temperatures because of interaction between dislocations and interstitial solute atoms (C or N) or substitutional atoms (Cr or Mo).
Açıklama
Anahtar Kelimeler
Hot work tool steels, dynamic strain aging, mechanical properties
Kaynak
Journal of the Faculty of Engineering and Architecture of Gazi University
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
36
Sayı
3
