Interfacial characterization and mechanical properties of additively manufactured IN718/CoNiCrAlY laminate

Luo, Hao; Li, Xiaoqiang; Pan, Cunliang; Qu, Shengguan; Jiang, Chenyang; Pang, Huimin; Zeng, Kai

doi:10.1016/j.msea.2022.143578

Cited by 7 publications

(1 citation statement)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cobalt–chromium alloys combined with tungsten carbide or other hard particles offer excellent resistance to abrasive wear and impact. Nickel-based superalloys can be integrated with ceramics or diamond particles to create erosion-resistant surfaces in extreme environments [ 20 , 21 ]. Design plays a critical role in maximizing corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Interface Hardness Analysis of between IN625 and CoCrMo Manufactured by Pulsed Wave Laser Powder Bed Fusion

Hoo,

Xiao,

Yao

et al. 2024

Micromachines

View full text Add to dashboard Cite

The nuclear and petrochemical industries often require multi-metal parts that are corrosion-resistant, heat-resistant, and possess high strength to enhance equipment safety and reduce downtime. Additive manufacturing technology enables the rapid and flexible processing of multi-metal parts to meet these stringent demands. This study is aimed at investigating the interface hardness between CoCrMo/IN625 to determine optimal processing parameters that can be utilized in manufacturing reliable and durable multi-metal parts. The result indicates that when the volumetric energy density, Ev, is at or below 20 J/mm3, microfluidic forces are unable to sufficiently diffuse between the two metals, leading to insufficient diffusion, and the high hardness CoCrMo acts as a support, resulting in a significantly higher interface hardness. As Ev increases, intense recoil pressure within the microfluidic forces disrupts the melt pool, allowing for full diffusion between the two metals. The fully diffused high-hardness CoCrMo has been diluted by the low-hardness IN625, thus reducing the interface hardness. Considering the interface hardness, strength, and printing efficiency (time and energy consumption), we recommend a range of 35 J/mm3 < Ev ≤ 75 J/mm3. In this range, the average values for interface hardness and tensile strength of the samples are approximately 382 HV and 903 MPa, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%