Powder Metallurgy最新文献

Effect of duplex surface treatment on the impact properties of maraging steel produced by laser powder bed fusion 双相表面处理对激光粉末床熔融法生产的马氏体时效钢冲击性能的影响

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-05-09 DOI: 10.1177/00325899241253271

T. Tekin, L. Maines, F. Naclerio, R. Ipek, A. Molinari

引用次数: 0

Characteristic analysis of high-speed steel powder prepared by gas atomisation 气体雾化制备高速钢粉末的特性分析

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-04-24 DOI: 10.1177/00325899241248995

Deyin Zhang, Tianyu Lu, Xu Hao, Jiyang Tian, Ying Yu, Baorui Jia, Haoyang Wu, Mingli Qin, Xuanhui Qu

{"title":"Characteristic analysis of high-speed steel powder prepared by gas atomisation","authors":"Deyin Zhang, Tianyu Lu, Xu Hao, Jiyang Tian, Ying Yu, Baorui Jia, Haoyang Wu, Mingli Qin, Xuanhui Qu","doi":"10.1177/00325899241248995","DOIUrl":"https://doi.org/10.1177/00325899241248995","url":null,"abstract":"The performance of high-speed steel (HSS) powder is a prerequisite for the preparation of high-performance powder metallurgy HSS. The physical properties, microstructure, and solidification characteristics of HSS powder prepared by nitrogen gas atomisation were systematically studied and analysed in detail. For the atomised TPM558 HSS powder, the morphology is spherical and the particle size distribution is wide. The smooth small particles of satellite powder attach to the surface of large particles. Shrinkage pits caused by solidification shrinkage exist on the surface of large particles. The average cooling rate is between 104 and 106 K·s−1, with the increase of cooling rate, the powder surface tends to be smooth, and the grain structure is transformed in the order of cellular to dendritic to radial. The single powder particle surface shows fine-equiaxed grains, while the internal presents columnar grains. The crystalline phases of the powder are austenite, ferrite, martensite, and carbide, and the carbide includes MC carbide with face-centred structure and M2C carbide with hexagonal structure. The average nano-hardness of the powder is 9.93 GPa, resulting in poor formability, and it can be pressed and formed only after adding binder.","PeriodicalId":20392,"journal":{"name":"Powder Metallurgy","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140661359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential of powder metallurgical methods to fabricate Fe-6.5Si soft magnetic components 粉末冶金法制造 Fe-6.5Si 软磁元件的潜力

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-04-18 DOI: 10.1177/00325899241247319

I. Lindemann-Geipel, T. Mix, M. Thamm, C. Höhnel, B. Weise, K. Reuter, A. Kirchner, T. Weißgärber

{"title":"Potential of powder metallurgical methods to fabricate Fe-6.5Si soft magnetic components","authors":"I. Lindemann-Geipel, T. Mix, M. Thamm, C. Höhnel, B. Weise, K. Reuter, A. Kirchner, T. Weißgärber","doi":"10.1177/00325899241247319","DOIUrl":"https://doi.org/10.1177/00325899241247319","url":null,"abstract":"The soft magnetic Fe-6.5Si alloy is well known for its excellent soft magnetic properties but its usage is limited due to fabricational constrains by conventional methods. Powder metallurgical processing of Fe-6.5Si is possible by a variety of different methods shown here, sinter-based screen printing (SP), electron beam powder bed fusion (E-PBF) and field-assisted sintering (field-assisted sintering/spark plasma sintering, FAST/SPS). The microstructure of the components varies strongly by process and powder used which is directly influencing their soft magnetic properties. The correlation between powder properties and processing parameters on the structural and magnetic properties is established. Lowest coercivity ( H c = 7 A m−1) is achieved by E-PBF due to large grain size minimising hysteresis losses necessary for direct current applications. SP can provide sheets with low coercivity ( H c = 21 A m−1) and adjustable thickness reducing eddy current losses especially suitable for alternating current application at higher frequencies. FAST/SPS can be used for a large range of powder particle sizes which is suitable to tune the soft magnetic properties in a wide range between 40 and 210 A m−1.","PeriodicalId":20392,"journal":{"name":"Powder Metallurgy","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140689413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Günter Petzow 1926–2024 – Obituary 冈特-彼得佐夫 1926-2024 - 讣告

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-03-19 DOI: 10.1177/00325899241238063

Gerhard M. Schneider, Ing. Frank Mücklich, Stefan Klein

引用次数: 0

Microstructure, material characteristics and mechanical properties of CoMoNiTa3 medium-entropy alloys through the vacuum hot pressing process 通过真空热压工艺获得 CoMoNiTa3 中熵合金的微观结构、材料特性和机械性能

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-03-01 DOI: 10.1177/00325899241235069

K. Huang, Shih-Hsien Chang, Yong-Jay Lin

{"title":"Microstructure, material characteristics and mechanical properties of CoMoNiTa3 medium-entropy alloys through the vacuum hot pressing process","authors":"K. Huang, Shih-Hsien Chang, Yong-Jay Lin","doi":"10.1177/00325899241235069","DOIUrl":"https://doi.org/10.1177/00325899241235069","url":null,"abstract":"This work fabricated CoMoNiTa3 medium-entropy alloys using the vacuum hot pressing process of powder metallurgy technology. Micron-grade cobalt (6.3 μm), molybdenum (13.2 μm), nickel (2.4 μm) and tantalum powders (25.0 μm) were combined using ball milling. The experiments utilised various hot pressing temperatures (1000, 1050, 1100, and 1150 °C) and hot pressing pressures (20, 35, and 50 MPa) to identify the optimal parameters for CoMoNiTa3 alloys, while simultaneously investigating the differences in microstructures. The experimental results reveal that the optimal hot pressing parameters of this alloy were 1100 °C at 50 MPa for 1 h. The sintering density was enhanced to 9.65 ± 0.01 g cm−3, while the hardness, transverse rupture strength, and flexural modulus reached 85.5 ± 0.1 HRA, 1370.3 ± 90.1 MPa and 168.6 ± 12.7 GPa, respectively. Moreover, the electrical conductivity was 6.53 ± 0.13 × 104 S cm−1. Furthermore, the electron probe microanalyser, electron backscatter diffraction, and transmission electron microscopy results confirmed the face-centred cubic solid solution, Ni3Ta, and μ phases of the CoMoNiTa3 structure, and no preferred grain orientation was found.","PeriodicalId":20392,"journal":{"name":"Powder Metallurgy","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140087782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of surface modification of metal powders (by aluminum stearate) on the properties of metal injection molding feedstock 金属粉末表面改性（硬脂酸铝）对金属注射成型原料性能的影响

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-01-31 DOI: 10.1177/00325899231212626

Haihong Ma, Shuncheng Fang, Zhengfa Zhou, F. Ren, Weibing Xu, Guoming Chen

引用次数: 0

Assessing the mechanical properties of out-of-specification additive manufacturing Ti-6Al-4V powder recycled through field-assisted sintering technology (FAST) 评估通过现场辅助烧结技术（FAST）回收的不合规格增材制造 Ti-6Al-4V 粉末的机械性能

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-01-31 DOI: 10.1177/00325899231216673

N. Weston, Dennis Premoli, Thomas Childerhouse, Oliver Levano Blanch, Martin Jackson

{"title":"Assessing the mechanical properties of out-of-specification additive manufacturing Ti-6Al-4V powder recycled through field-assisted sintering technology (FAST)","authors":"N. Weston, Dennis Premoli, Thomas Childerhouse, Oliver Levano Blanch, Martin Jackson","doi":"10.1177/00325899231216673","DOIUrl":"https://doi.org/10.1177/00325899231216673","url":null,"abstract":"A gas atomised Ti-6Al-4V powder, classified as out-of-specification for additive manufacturing (AM), was consolidated via Field-Assisted Sintering Technology (FAST). Fully dense 250 mm diameter discs with lamellar or bimodal microstructures were produced by FAST processing either above or below the β-transus temperature. Static and dynamic mechanical properties were assessed by testing full-size specimens in the ‘as-FAST’ condition. Material from both processing conditions exceeded the ASTM Ti-6Al-4V powder metallurgy requirements for yield/tensile strength and elongation. Furthermore, material from the edge of the disc processed below the β-transus temperature meets ASTM requirements for wrought Ti-6Al-4V. Fatigue performance also compared favourably with conventionally processed Ti-6Al-4V. This work establishes that surplus AM powders can be successfully recycled via the one-step FAST process and provides confidence that this ASTM-grade material can be used in a range of applications under both static and dynamic loading, which will improve the sustainability credentials of the AM sector.","PeriodicalId":20392,"journal":{"name":"Powder Metallurgy","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140475795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of mechanical milling on microstructure evolution and mechanical properties of Al–Zn–Mg–Cu–Si alloy fabricated via spark plasma sintering 机械研磨对火花等离子烧结法制造的铝锌镁铜硅合金微观结构演变和力学性能的影响

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-01-31 DOI: 10.1177/00325899231212628

Junho Lee, Woocheol Shin, Jun-Ha Jeon, S. Son, Seok-Jae Lee, Jae-Gil Jung

引用次数: 0

Gian Filippo Bocchini – Obituary 吉安-菲利波-博奇尼 - 讣告

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-01-30 DOI: 10.1177/00325899231217367

Alberto Molinari

引用次数: 0

Enhancing the thermoelectric properties of bismuth antimony tellurides containing excess Te with respect to sintering temperature 随烧结温度提高含过量碲铋锑的热电特性

IF 1.4 4区材料科学

Powder Metallurgy Pub Date : 2024-01-15 DOI: 10.1177/00325899231212631

Hyo Jeong Kim, Min Soo Park, G. Ha, NamHyun Kang

引用次数: 0