The Prevention of Hydrogen-Induced Cracking in HY-130 Weldments.
Abstract
The present research has the following objectives: (1) To evaluate the interrelationship among the mechanical, metallurgical, and chemical factors responsible for hydrogen-induced cracking in HY-130 steel weldments using the Augmented Strain Cracking Test. (2) To determine the effect of preheat and interpass temperatures and times on level of hydrogen retained. (3) To study, with the aid of acoustic emission technology and both electron and optical microscopy, the mechanisms for nucleation and propagation of hydrogen-induced cracks. (4) To recommend soundly based yet practical procedures for eliminating hydrogen-induced cracking in HY-130 weldments. Testing performed to date has been restricted to a constant augmented strain of 0.5%. This level of strain produces a stress in the outer fibers slightly in excess of the yield stress. Effects of the following are discussed: Hydrogen Content; Preheat; Postheat; Hydrogen Distribution Experiments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1976
- Accession Number
- ADA029658
Entities
Organizations
- Rensselaer Polytechnic Institute