2021 Nashville AISTech

Development of ASTM A709-50WF Heavy Plate for Fracture Critical Bridge Applications (Room 208 B)

29 Jun 21
10:00 AM - 10:30 AM

Tracks: Metallurgy - Processing, Products & Applications: Physical Metallurgy of Steels I

Speaker(s): Dengqi Bai, SSAB Americas; Chris Amsden, SSAB Iowa Inc.; Chase Rawlinson, SSAB Alabama Inc.; Liz Peterson, SSAB Alabama Inc.; Yufeng Wang, Purdue University Northwest

For some fracture critical applications, the requirements for the internal quality of steel plates, especially heavy-gauge plates, are very stringent. To ensure sound internal quality and performance, some grades require not only ultrasonic testing, but also through-thickness tensile testing (Z-test). One of the common defects in heavy-gauge hot-rolled steel plates is hydrogen embrittlement. When the hydrogen content in a steel plate reaches a certain level, it can cause microcracks, blisters and flaking. In the present study, the effects of rolling and cooling processes on hydrogen removal in a low-carbon microalloyed steel were analyzed.