High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes) An International Journal

ISSN for PRINT: 1093-3611

For Online Access

Best Paper Award Selection - Editorial Board Site

2002, Volume6

Issue 2

147 pages

Issue price - $144.00

Dongjin Kim
Research and Development Center, Doosan Heavy Industries & Construction Co. Ltd., Changwon, 641-792 Korea

Soonjong Jeong
Research and Development Center, Doosan Heavy Industries & Construction Co. Ltd., Changwon, 641-792 Korea

Byunghoon Kim
Research and Development Center, Doosan Heavy Industries & Construction Co. Ltd., Changwon, 641-792 Korea

Jeongtae Kim
Research and Development Center, Doosan Heavy Industries & Construction Co. Ltd., Changwon, 641-792 Korea

Wonjae Lee
Electric and Magnetic Devices Group, Korea Electrotechnology Research Institute, Sungju-Dong 28-1, Changwon, 641-120 Korea

Chungyun Kang
Dept. of Metallurgical Engineering, Pusan National University, Pusan 609-735 Korea

Methane bubble formation in a 3Cr-lMo-0.25V steel was investigated in association with carbides formation and prior austenite grain size. The reaction between hydrogen and carbon arises the formation of methane bubbles affected by carbides as well as the prior austenite grain size. The formation of stable carbides through heat treatments led to the lowering carbon activity, and thereby giving rise to improved resistance to hydrogen attack. When the steel has larger prior austenite grain size and the larger occupancy of carbides on grain boundary, the severe hydrogen attack occurred due to the reduction of total grain boundary areas relative to the amount of bubbles.

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