Laser metal deposition as repair technology for 316L stainless steel: Influence of feeding powder compositions on microstructure and mechanical properties

Sun, Guifang; Shen, Xiaojun; Wang, Z.D.; Zhan, Mimi; Yao, Shutao; Zhou, Rui; Ni, Zhen Hua

doi:10.1016/j.optlastec.2018.07.051

Cited by 81 publications

(42 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…By adjusting the feed rate, it is feasible to achieve desirable microstructural features and chemical composition which is favourable for building functionally graded materials [27] or structural metal components [13]. Apart from manufacturing near net shape components, DED is suitable for repairing high value parts with little wastage [28][29][30]. This capability enables manufacturers to remanufacture turbine blades with cracks and voids which is economically viable and helps in design enhancements at the time of restoration [22].…”

Section: Types Of Metal Am Processmentioning

confidence: 99%

A Critical Review of the Material Characteristics of Additive Manufactured IN718 for High Temperature Application

Yong¹,

Gibbons²,

West³

2020

Preprint

View full text Add to dashboard Cite

This paper reviews state of the art Additive Manufactured (AM) IN718 alloy intended for high temperature applications. AM processes have been around for decades and have gained traction in the past five years due to the huge economic benefit it brings to manufacturers. It is crucial for the scientific community to look into AM IN718 applicability in order to see a step-change in the production. Microstructural studies reveal that the grain structure plays a significant role in determining the fatigue lifespan of the material. Controlling IN718 respective phases such as the &upsih;’', δ and Laves phase is seen to be crucial. Literature reviews have shown that the mechanical properties of AM IN718 were very close to its wrought counterpart when treated appropriately. Higher homogenization temperature and longer ageing were recommended to dissolve the damaging phases. Various surface enhancement techniques were examined to find out their compatibility to AM IN718 alloy that is intended for high temperature application. Laser shock peening (LSP) technology stands out due to the ability to impart low cold work which helps in containing the beneficial compressive residual stress it brings in high temperature fatigue environment.

show abstract

Section: Types Of Metal Am Processmentioning

confidence: 99%

A Critical Review of the Material Characteristics of Additive Manufactured IN718 for High Temperature Application

Yong¹,

Gibbons²,

West³

2020

Preprint

View full text Add to dashboard Cite

show abstract

“…In recent years, a growing body of literature has emerged in which the correlation among process parameters, microstructure, and mechanical properties of DED AISI 316L stainless steel ( Figure 1) has been studied [31][32][33][34][35]. For instance, Yadollahi et al studied the influence of the time interval between the deposition of layers and the mechanical properties of DED AISI 316L [36].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of AISI 316L Produced by Directed Energy Deposition-Based Additive Manufacturing: A Review

et al. 2020

View full text Add to dashboard Cite

Directed energy deposition (DED) as a metal additive manufacturing technology can be used to produce or repair complex shape parts in a layer-wise process using powder or wire. Thanks to its advantages in the fabrication of net-shape and functionally graded components, DED could attract significant interest in the production of high-value parts for different engineering applications. Nevertheless, the industrialization of this technology remains challenging, mainly because of the lack of knowledge regarding the microstructure and mechanical characteristics of as-built parts, as well as the trustworthiness/durability of engineering parts produced by the DED process. Hence, this paper reviews the published data about the microstructure and mechanical performance of DED AISI 316L stainless steel. The data show that building conditions play key roles in the determination of the microstructure and mechanical characteristics of the final components produced via DED. Moreover, this review article sheds light on the major advancements and challenges in the production of AISI 316L parts by the DED process. In addition, it is found that in spite of different investigations carried out on the optimization of process parameters, further research efforts into the production of AISI 316L components via DED technology is required.

show abstract

“…Laser metal deposition (LMD), also known as laser cladding (LC), laser metal forming (LMF), laser engineered net shaping (LENS), and laser free-form fabrication (LFFF), has been widely used in 3D printing and repair of high value-added metal parts [ 1 , 2 , 3 , 4 , 5 ]. LMD is the most cutting-edge technology in additive manufacturing and rapid prototyping (3D printing) systems, and is an important development direction in the field of intelligent manufacturing [ 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Crack Detection during Laser Metal Deposition by Infrared Monochrome Pyrometer

Cui

Xiao

2020

Materials

View full text Add to dashboard Cite

Laser metal deposition (LMD) is an advanced technology of additive manufacturing which involves sophisticated processes. However, it is associated with high risks of failure due to the possible generation of cracks and bubbles. If not identified in time, such defects can cause substantial losses. In this paper, real-time monitoring of LMD samples and online detection of cracks by an infrared monochrome pyrometer (IMP) could mitigate this risk. An experimental platform for crack detection in LMD samples was developed, and the identification of four simulated cracks in a 316L austenitic stainless-steel LMD sample was conducted. Data at temperatures higher than 150 °C were collected by an IMP, and the results indicated that crack depth is an important factor affecting the peak temperature. Based on this factor, the locations of cracks in LMD-316L austenitic stainless-steel samples can be determined. The proposed technique can provide real-time detection of cracks through layers of cladding during large-scale manufacturing, which suggests its relevance for optimizing the technological process and parameters, as well as reducing the possibility of cracks in the LMD process.

show abstract

Laser metal deposition as repair technology for 316L stainless steel: Influence of feeding powder compositions on microstructure and mechanical properties

Cited by 81 publications

References 37 publications

A Critical Review of the Material Characteristics of Additive Manufactured IN718 for High Temperature Application

A Critical Review of the Material Characteristics of Additive Manufactured IN718 for High Temperature Application

Microstructure and Mechanical Properties of AISI 316L Produced by Directed Energy Deposition-Based Additive Manufacturing: A Review

Crack Detection during Laser Metal Deposition by Infrared Monochrome Pyrometer

Contact Info

Product

Resources

About