| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced High Strength Steels V
|
| Presentation Title |
Microstructural Characterization of Fracture in Fe-10 pct Ni Gas Metal Arc Welds |
| Author(s) |
Richard E. Baumer, Daniel H. Bechetti, Matthew F. Sinfield |
| On-Site Speaker (Planned) |
Richard E. Baumer |
| Abstract Scope |
While ship light weighting and performance enhancements can be achieved through use of advanced high-strength steel alloys with yield strengths exceeding 100 ksi, successful fabrication requires welding filler materials that produce weldments of matching base metal strength and adequate toughness for the intended application, economically. Recent work has demonstrated that a Fe-10 pct nickel welding consumable can produce low distortion weldments with exceptional strength and low temperature toughness when deposited using low deposition rate gas tungsten arc welding. However, toughness is reduced in weldments produced by high deposition rate spray transfer gas metal arc (GMA) welding, the welding process most commonly used in modern shipbuilding. This work reports the relationship of GMA welding heat input of a Fe-10 pct nickel weld metal consumable to weld metal toughness through dynamic tear (DT) test energy experiments. The fusion zone microstructure is investigated, correlated to cleavage fracture, and compared DT test energy results. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Characterization, Mechanical Properties |