| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 774166 | Engineering Failure Analysis | 2013 | 8 Pages |
Abstract
Three case studies are presented in which untempered martensite produced during forming or use caused premature failure or failures in unexpected regions. The sources of formation of untempered martensite observed were: laser cutting of circular saws, friction originated from poor fixation of blades, and uncontrolled thermal cycling in the vicinity of a weld. Due to its very high hardness, untempered martensite favors the appearance of microcracks that develop into premature catastrophic failures.
► Three cases of premature failures in blades were studied. ► Failures were caused by formation of untempered martensite during processing or use. ► Causes for martensite formation were: laser cutting, friction and welding process.
Related Topics
Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Eduardo Franco de Monlevade, Maria Elena Feitosa, Paulo da Cruz Leite Júnior, Moacir Bueno,