Influence of composition and cleanliness of electrodes on the weld metal properties and microstructure in advanced copper precipitation strengthened HSLA steels

Book · Sat Dec 30 23:00:00 EST 1995

OSTI ID:234243

Krishnadev, M R; Zhang, W L ^[1]; Rene, R ^[2]; Gendron, A; Vaidy, V ^[3]; Bowker, J T ^[4]

---

1. Laval Univ., Laval, Quebec (Canada)
2. MIL Davie, Levis, Quebec (Canada)
3. Canadian Liquid Air, Montreal, Quebec (Canada)
4. CANMET, Ottawa, Ontario (Canada)

The relationship between weld metal microstructure and properties, as influenced by alloying elements and welding practice in a 690 MPa grade copper precipitation strengthened HSLA steel, has been studied using specially formulated flux core and metal core welding electrodes. Instrumented Charpy has been used to characterize the toughness. Microstructures have been studied through optical and transmission electron microscopy. Fractography, including oblique section metallography, has been used to relate the fracture morphology to the variations in the nature of transformation microstructure in the weld metals. Potential compositions giving strength level of over 690 MPa with good toughness have been identified.

• OSTI ID: 234243
• Report Number(s): CONF-951026--; ISBN 0-87170-555-9
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRODES
EXPERIMENTAL DATA
LOW ALLOY STEELS
MECHANICAL PROPERTIES
MICROSTRUCTURE
WELDED JOINTS
WELDING
WELDING MACHINES