Estimation of embrittlement during aging of AISI 316 stainless steel TIG welds

Bulletin of materials science

K R Hebbar¹  J Nayak¹  H V S Nayak¹  K R Udupa¹ 

[1] Department of Metallurgical and Materials Engineering, National Institute of Technology, Surathkal, PO Srinivasnagar 575 025, India$$Department of Metallurgical and Materials Engineering, National Institute of Technology, Surathkal, PO Srinivasnagar 575 025, IndiaDepartment of Metallurgical and Materials Engineering, National Institute of Technology, Surathkal, PO Srinivasnagar 575 025, India$$

关键词: Stainless steel;    TIG welds;    aging;    Charpy impact;    lower shelf energy;    embrittlement.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Weldments of AISI grade 316 stainless steel, having a ferrite content of 4�??6% and a variety of nitrogen concentrations were prepared using a modified element implant technique. Charpy impact specimens prepared from these weldments were subjected to a variety of aging treatments. Impact toughness decreases with aging time at all aging temperatures. Nitrogen is found to be beneficial to toughness. An empirical relation connecting the aging temperature, aging time and nitrogen content with toughness has been developed which can be used to estimate the time for embrittlement.

【 授权许可】

Unknown