Microstructure and Mechanical Property Analysis of the Metal Part by SLM

2013 ◽  
Vol 423-426 ◽  
pp. 693-698 ◽  
Author(s):  
Qun Qin ◽  
Guang Xia Chen
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Steel Powder ◽  
Stainless Steel Powder ◽  
Micro Hardness ◽  
Metal Part ◽  
Tensile Experiment ◽  
Microstructure And Mechanical Property

The objective of the research was that analyzed the microstructure and mechanical properties of metal part built by SLM in this paper. The tensile samples were made by SLM, the rupture gotten with tensile experiment was scan by SEM, and the rupture property was analyzed. The results of experiment showed: the parts formed by optimized parameters have a density above 96%, a tensile strength of 635MPa, an extension of 55.679% and an average micro hardness of HV307 for stainless steel powder. It is interesting to find that the phase of the built parts is also austenite by XRD, which is the same as that of the starting material.

Effects of Sintering Conditions on Properties of a Warm Compacted Stainless Steel Powder

2012 ◽  
Vol 217-219 ◽  
pp. 483-486
Author(s):  
Mei Yuan Ke
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Sintered Density ◽  
Sintering Temperature ◽  
Steel Powder ◽  
Stainless Steel Powder ◽  
Sintering Atmosphere ◽  
Comprehensive Properties ◽  
Ammonia Atmosphere ◽  
Sintering Conditions

Effects of Sintering atmosphere and temperature on properties of warm compacted 410L stainless steel powder were studied. Sintered density, hardness, tensile strength and elongation were measured. Results showed that in order to achieve high comprehensive properties, the optimal sintering temperature was 1230°C for 410L stainless steel powder. At the same sintering temperature, density and hardness sintered in vacuum were much higher than that sintered in cracked ammonia while tensile strength sintered in cracked ammonia were much higher than that in vacuum. When sintered in vacuum at 1230°C, sintered density was 7.45 g•cm-3, hardness was 65 HRB, tensile strength was 410 MPa and elongation was 29.5%. When sintered in cracked ammonia atmosphere at 1230°C, sintered density was 7.26 g•cm-3, hardness was 97 HRB, tensile strength was 515 MPa and elongation was 3.8%.

Mechanical Properties of Stainless Steel Powder

JOM ◽  
1951 ◽  
Vol 3 (2) ◽  
pp. 125-130
Author(s):  
Arthur H. Grobe ◽  
George A. Roberts
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Steel Powder ◽  
Stainless Steel Powder

Water Atomized 17-4 PH Stainless Steel Powder as a Cheaper Alternative Powder Feedstock for Selective Laser Melting

2018 ◽  
Vol 941 ◽  
pp. 698-703 ◽  
Author(s):  
Milad Ghayoor ◽  
Sunil B. Badwe ◽  
Harish Irrinki ◽  
Sundar V. Atre ◽  
Somayeh Pasebani
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Stainless Steel ◽  
Selective Laser Melting ◽  
Steel Powder ◽  
Melting Process ◽  
Stainless Steel Powder ◽  
Laser Melting ◽  
Austenitic Phase ◽  
Process Gas

Water atomized and gas atomized 17-4 PH stainless steel powder were used as feedstock in selective laser melting process. Gas atomized powder revealed single martensitic phase after printing and heat treatment. As-printed water atomized powder contained dual martensitic and austenitic phase. The H900 heat treatment cycle was not effective in enhancing mechanical properties of the water atomized powder after laser melting. However, after solutionizing at 1315 oC and aging at 482oC fully martensitic structure was observed with yield strength of 1000 MPa and ultimate tensile strength of 1261 MPa which are comparable to those of gas atomized, 1254 MPa and 1300 MPa, respectively. Improved mechanical properties in water atomized powder was found to be related to presence of finer martensite. Our results imply that water atomized powder is a promising cheaper feedstock alternative to gas atomized powder.

Microstructure and Mechanical Property along 3D Directions of AZ31 Magnesium Joint Welded by FSW

2012 ◽  
Vol 567 ◽  
pp. 187-191 ◽  
Author(s):  
Sheng Lu ◽  
Shi Yu Xiao ◽  
Fang Qi ◽  
Jing Chen
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Friction Stir Welding ◽  
Magnesium Alloys ◽  
Travel Speed ◽  
Middle Part ◽  
Three Dimensions ◽  
Friction Stir ◽  
Tensile Experiment ◽  
Microstructure And Mechanical Property

As-cast AZ31 magnesium alloys was fabricated with travel speed of 50 mm/min and rotating rate of 1500 r/min by means of friction stir welding (FSW). The microstructure and mechanical property of the joint along three dimensions (3D) directions were investigated by optical microscopy (OM) and tensile experiment. The results show that the FSW joint is characterized with asymmetric gradient in 3D. The mechanical properties of the slice decrease from the top to the bottom of joint and starting part is the weakest unit, while middle part corresponds to the strongest one.

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