TEMPERING TEMPERATURE EFFECTS ON HARDNESS AND IMPACT TOUGHNESS OF 56NiCrMo7 STEEL

被引：8

作者：

Dabrowski, R. ^{[1
]}

Dziurka, R. ^{[1
]}

机构：

[1] Agh Univ Sci & Technol, Fac Met Engn & Ind Comp Sci, PL-30059 Krakow, Poland

来源：

ARCHIVES OF METALLURGY AND MATERIALS | 2011年 / 56卷 / 01期

关键词：

hot work tool steel; heat treatment; microstructure; hardness; impact toughness; fractographic examination; TOOL STEEL;

D O I：

10.2478/v10172-011-0001-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The assessment of the effect of tempering temperature on hardness and impact toughness of a 56NiCrMo7 grade hot work tool steel was presented in the paper. It has been found that the investigated steel, after quenching in oil from 800 degrees C, softens quite slowly upon tempering within the range between 100 and 675 degrees C, which was confirmed not only by hardness measurements but also by observed changes occurring in its microstructure, whereas the impact energy (KV) absorbed by the test specimen increases with temperature, achieving > 66J after tempering at 675 degrees C. The changes observed in the character of the fracture surfaces allows of interpretation of the impact test results for the whole range of tempering temperatures.

引用

页码：5 / 11

页数：7