Effect of Heat Treatment on Cr2Nb Phase and Properties of Spark Plasma Sintered Cu-2Cr-1Nb Alloy

Lv, Xueqian; Liu, Zuming; Lei, Ting; Li, Quan; Zhou, Xinchi; Zhang, Zejie

doi:10.3390/ma13122860

Cited by 8 publications

(10 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 14 shows the tensile strength and electrical conductivity of the studied Cu–2Cr–1Zn alloy and other reported Cu–Cr system alloys [32,46,50-64]. It can be seen from Figure 14 that, compared with other CuCr alloys, Cu–Cr–Zn has a tensile strength of 616.7 MPa and an electrical conductivity of 71.5% IACS.…”

Section: Discussionmentioning

confidence: 86%

See 1 more Smart Citation

Effects of Zn addition on the microstructure and properties of Cu–Cr alloys

Lei

Xu³

et al. 2023

Materials Science and Technology

View full text Add to dashboard Cite

Many attempts were conducted to improve Cu–Cr alloys’ softening temperature, strength, and electrical conductivity. After homogenised treatment at 900°C for 4 h, hot rolled by 80% at 900°C, solid solution treated at 940°C for 2 h, cold rolled by 50%, and aged at 450°C for 1 h, cold rolled by 50%, and aged at 450°C for 0.5 h, the tensile strength, yield strength, microhardness, and electrical conductivity of the fabricated Cu–2Cr–1Zn alloy were 616.7, 540.1 MPa, 176.7 HV, and 71.5% IACS, respectively, with a softening temperature of 530°C. Orowan precipitation strengthening was the primary strengthening mechanism. These findings bring an effective way to improve the strength and softening temperature with a small loss of electrical conductivity.

show abstract

Section: Discussionmentioning

confidence: 86%

“…Figure 14 shows the tensile strength and electrical conductivity of the studied Cu-2Cr-1Zn alloy and other reported Cu-Cr system alloys [32,46,[50][51][52][53][54][55][56][57][58][59][60][61][62][63][64].…”

Section: Properties Comparisonmentioning

confidence: 99%

Effects of Zn addition on the microstructure and properties of Cu–Cr alloys

Lei

Xu³

et al. 2023

Materials Science and Technology

View full text Add to dashboard Cite

show abstract

“…It is worth noting that vacuuming in the sintering chamber was used between 0.01 and 100 Pa [51,52,54,71,72,75,[85][86][87][88][89][90][91][92][93][94]. Finally, hence the nanocrystalline Cu surface is readily oxidizable, the time to load powder in the die should be less than 2 min, and the sintering chamber evacuation process should be done within 10 min [90].…”

Section: Contamination Contentmentioning

confidence: 99%

A critical review on spark plasma sintering of copper and its alloys

et al. 2021

View full text Add to dashboard Cite

Copper and its alloys have been in the service of humankind earlier than any other metal throughout history. In the present review, all aspects of the SPS of copper and its alloys are comprehensively investigated, and their potential effects on the microstructure and properties of alloys are thoroughly reviewed. In this regard, the densification phenomenon during SPS treatment is fully investigated. The effects of raw powder characteristics involving particle size, contamination content, and powder morphology on the sinterability of these materials are examined. Then, the influence of SPS operation parameters consisting of pressure, heating rate, dwelling time, pulsed electrical current, electrical pulses pattern, sintering temperature, and sintering tooling on densification of these materials is extensively discussed. Furthermore, the microstructure evolution and grain growth behaviors during SPS are explored. In addition, current challenges and future perspectives of this field are addressed.

show abstract

“…Cu–8Cr–4Nb (at.%) alloy with a high density can be fabricated by HPS [ 10 ], but the sintering temperature is high, reaching 1000 °C, resulting in a large size of the Cr 2 Nb phase in the sintered parts. The tensile strength of Cu–2Cr–1Nb alloy fabricated by SPS can reach 332 MPa [ 11 ]. The microhardness of Cu–2Cr–1.35Nb–0.15Zr (wt.%) alloy can reach a value of 133 HV, and the electrical conductivity is 74.6% IACS [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Process Parameters on the Microstructure and Properties of Cu–Cr–Nb–Ti Alloy Manufactured by Selective Laser Melting

Liu

Zhou

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

The fabrication of high-performance copper alloys by selective laser melting (SLM) is challenging, and establishing relationships between the process parameters and microstructures is necessary. In this study, Cu–Cr–Nb–Ti alloy is manufactured by SLM, and the microstructures of the alloy are investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and electron backscatter diffraction (EBSD). The effects of processing parameters such as laser power and scanning speed on the relative density, defects, microstructures, mechanical properties, and electrical conductivity of the Cu–Cr–Nb–Ti alloy are studied. The optimal processing window for fabricating Cu–Cr–Nb–Ti alloy by SLM is determined. Face-centered cubic (FCC) Cu diffraction peaks shifting to small angles are observed, and there are no diffraction peaks related to the second phase. The grains of XY planes have a bimodal distribution with an average grain size of 24–55 μm. Fine second phases with sizes of less than 50 nm are obtained. The microhardness, tensile strength, and elongation of the Cu–Cr–Nb–Ti alloy manufactured using the optimum processing parameters, laser power of 325 W and scanning speed of 800 mm/s, are 139 HV0.2, 416 MPa, and 27.8%, respectively, and the electrical conductivity is 15.6% IACS (International Annealed Copper Standard). This study provides a feasible scheme for preparing copper alloys with excellent performance and complex geometries.

show abstract

Effect of Heat Treatment on Cr2Nb Phase and Properties of Spark Plasma Sintered Cu-2Cr-1Nb Alloy

Cited by 8 publications

References 35 publications

Effects of Zn addition on the microstructure and properties of Cu–Cr alloys

Effects of Zn addition on the microstructure and properties of Cu–Cr alloys

A critical review on spark plasma sintering of copper and its alloys

Effect of Process Parameters on the Microstructure and Properties of Cu–Cr–Nb–Ti Alloy Manufactured by Selective Laser Melting

Contact Info

Product

Resources

About