Effect of molybdenum, vanadium, boron on mechanical properties of high chromium white cast iron in as-cast condition

F. Nurjaman, S. Sumardi, A. Shofi, M. Aryati, Bambang Suharno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this experiment, the effect of the addition carbide forming elements on high chromium white cast iron, such as molybdenum, vanadium and boron on its mechanical properties and microstructure was investigated. The high chromium white cast iron was produced by casting process and formed in 50 mm size of grinding balls with several compositions. Characterization of these grinding balls was conducted by using some testing methods, such as: chemical and microstructure analysis, hardness, and impact test. From the results, the addition of molybdenum, vanadium, and boron on high chromium white cast iron provided a significant improvement on its hardness, but reduced its toughness. Molybdenum induced fully austenitic matrix and Mo2C formation among eutectic M7C3 carbide. Vanadium was dissolved in the matrix and carbide. While boron was played a role to form fine eutectic carbide. Grinding balls with 1.89 C-13.1 Cr-1.32 Mo-1.36 V-0.00051 B in as-cast condition had the highest hardness, which was caused by finer structure of eutectic carbide, needle like structure (upper bainite) matrix, and martensite on its carbide boundary.

Original languageEnglish
Title of host publicationInternational Symposium on Frontier of Applied Physics, ISFAP 2015
Editors Isnaeni, Andrivo Rusydi, Febty Febriani, Muhammad Danang Birowosuto, Yuliati Herbani, Toto Sudiro, Hubby Izzuddin, Dedy H. B. Wicaksono, Ferensa Oemry, Titi Anggono
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413580
DOIs
Publication statusPublished - 12 Feb 2016
EventInternational Symposium on Frontier of Applied Physics, ISFAP 2015 - Bandung, West Java, Indonesia
Duration: 5 Oct 20157 Oct 2015

Publication series

NameAIP Conference Proceedings
Volume1711
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Symposium on Frontier of Applied Physics, ISFAP 2015
CountryIndonesia
CityBandung, West Java
Period5/10/157/10/15

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