EFFECT OF BORON ON THE WEAR BEHAVIOR OF HIGH CHROMIUM WHITE CAST IRONS

• DOI: 10.17770/etr2023vol3.7294
• Publication Date: 2023-06-13T07:11:14Z
• Authors: Julieta Kaleicheva; Krassimir Kirov; Valentin Mishev; Rumyana Lazarova; Zdravka Karaguiozova
• Keywords: Tempering

The wear behavior of high chromium white cast irons with composition: 2,6÷3,4% C; 0,9÷1,1% Si; 0,8÷1,1% Mn; 1,0÷1,3% Mo; 12,3÷13,4% Cr and 0,18 ÷ 1,25% B is investigated. microstructure tribological characteristics six compositions (one without boron 0,18; 0,23; 0,59; 0,96; boron) are studied.After casting, heat treatment was carried out, including quenching at 9500C tempering 2350C for 1 h. influence the heating temperature in interval 850÷11000С, 25 min on Rockwell hardness studied.The resistance during abrasive samples after casting investigated as measured loss mass terms dry friction under load 1,5 kg 10 min. lowest test conditions defined alloyed % - ∆ m = 0,1469 g 0,0022 treatment. highest determined testing 0,96 boron. show resistance.