Evaluation of Characteristic for SS400 and STS304 steel by Weld Thermal Cycle Simulation - 1st Report : on the Mechanical Properties and Microstructure

J. Ocean Eng. Technol. 2005;19(6):64-71.

Ahn, Seok-Hwan;Jeong, Jeong-Hwan;Nam, Ki-Woo;

Shool of Mehanical Engineering, Pukyong National University;Graduate School of Materials Science and Engineering, Pukyong National University;Division of Materials Science and Engineering, Pukyong National University;

용접열사이클 재현에 의한 SS400강 및 STS304강의 특성 평가 - 제1보 : 기계적 특성 및 조직

안석환;정정환;남기우;

부경대학교 기계공학부;부경대학교 대학원 재료공학과;부경대학교 신소재공학부;

Keywords: Weld Thermal Cycle Simulation, Tensile Strength, Thermal Stress, Hardness

핵심용어: 용접열사이클재현, 인장강도, 열응력, 경도

Abstract

The welding methods have been applied to the most structural products used in the automobile, ship construction, and construction. The structure steel must have sufficient strength of structure; However, the mechanical properties of the welded part changes when it is welded. Therefore, the stability or life of the structure may be affected by the changed mechanical properties. The mechanical properties of the welded part must be examined in order to ensure the safety of structure. In this research, the SS400 steel and the STS304 steel were used to estimate the mechanical properties of the HAZ by weld thermal cycle simulation. In this study, the materials were used to examine the weld thermal cycle simulation characteristic, under two conditions: the drawing with diameter of $Phi$10 and the residual stress removal treatment. To examine the mechanical properties by the weld thermal cycle simulation, the tensile test was carried out in room temperature. The crosshead speed was lmm/min.