Micro Structure and Hardness Analysis of Brass Metal Welded

International Conference on Chemistry and Material Science 2017

化学;材料科学

Lukman Faris, N.^1 ; Muljadi^1 ; Djuhana^2

Research Center for Physics - LIPI Kawasan Puspiptek, Serpong, Tangerang Selatan

15314, Indonesia^1

Mechanical Engineering Department - UNPAM Tangerang, Selatan

15314, Indonesia^2

关键词: Base metals;    Electrode coating;    Hardness measurement;    Hardness values;    Plumbing fittings;    Weld zone;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012042/pdf
DOI  :  10.1088/1757-899X/299/1/012042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Brass metals are widely used for plumbing fittings. High tensile brasses are more highly alloyed and find uses in marine engineering. The welding of brass metal has been done by using electrical weld machine (SMAW). The microstructure of brass metal welded was observed by optical microscope. The result can see that the microstructure has been changed due to heat from welding. The microstructure of original brass metal is seen a fine laminar stucture, but the microstructure at HAZ appears bigger grains and some area at HAZ is seen coarser microstructure. The microstructure at weld zone can be seen that it was found some of agglomeration of materials from reaction between brass metal and electrode coating wire. According the hardness measurement, it is found highest hardness value about 301.92 HV at weld zone, and hardness value at base metal is 177.84 HV.