Microstructure and Properties of ZcuSn3Zn8Pb6NiFeCo Alloy

2012 ◽  
Vol 430-432 ◽  
pp. 609-618 ◽  
Author(s):  
Qiang Song Wang ◽  
Zuo Fei Song ◽  
Zai Qiang Feng ◽  
Zi Dong Wang
Keyword(s):  
Grain Refinement ◽  
Copper Alloy ◽  
Iron Nanoparticles ◽  
Outstanding Contribution ◽  
High Undercooling ◽  
Alloy Solidification ◽  
Microstructure And Properties ◽  
New Class

In Situiron nanoparticles can be formed during copper alloy solidification. Here we consider ZCuSn3Zn8Pb6Ni1FeCo alloy.It is noted that high undercooling is the motive power of nanoparticles during solidification , which would act as heterogeneous nuclei to achieve outstanding contribution for grain refinement compared to ZCuSn3Zn8Pb6Ni1 alloy. Convection of the melt inhibit the growth of nanoparticles by way of prohibitting the deposition of iron atoms on the surface.This technique offer new enlightenment for the control of in-situ nanoparticles formed during alloy solidification,and also opens the door to a new class of dispersed nanoparticles strengthened materials.

Mechanism for In Situ Iron Nanoparticles Formed during Copper Alloy Solidification

2011 ◽  
Vol 189-193 ◽  
pp. 2441-2447
Author(s):  
Qiang Song Wang ◽  
Zhuo Fei Song ◽  
Zai Qiang Feng ◽  
Zi Dong Wang
Keyword(s):  
Grain Refinement ◽  
Copper Alloy ◽  
Iron Nanoparticles ◽  
Outstanding Contribution ◽  
High Undercooling ◽  
Feco Alloy ◽  
Alloy Solidification ◽  
New Class

In-situ iron nanoparticles can be formed during copper alloy solidification. Here we consider ZCuSn3Zn8Pb6Ni1FeCo alloy and demonstrate that high undercooling is the motive power of nanoparticles during solidification , which would act as heterogeneous nuclei to achieve outstanding contribution for grain refinement compared to ZCuSn3Zn8Pb6Ni1 alloy. Convection of the melt inhibit the growth of nanoparticles by way of prohibitting the deposition of iron atoms on the surface.This technique offer new enlightenment for the control of in-situ nanoparticles formed during alloy solidification,and also opens the door to a new class of dispersed nanoparticles strengthened materials.

Heterogeneous nucleation effect of in situ iron-rich nanoparticles on grain refinement of copper alloy

2016 ◽  
Vol 168 ◽  
pp. 188-191 ◽  
Author(s):  
Kaixuan Chen ◽  
Xiaohua Chen ◽  
Ding Ding ◽  
Guodong Shi ◽  
Zidong Wang
Keyword(s):  
Grain Refinement ◽  
Heterogeneous Nucleation ◽  
Copper Alloy ◽  
Nucleation Effect

Reductive Immobilization of Rhenium in Water and Soil Using Stabilized Iron Nanoparticles

2011 ◽  
Vol 187 ◽  
pp. 313-318
Author(s):  
Qing Wei Ding ◽  
Tian Wei Qian
Keyword(s):  
Iron Nanoparticles ◽  
Sandy Loam ◽  
Soil Column ◽  
Industrial Wastes ◽  
Column Experiments ◽  
Effective Agent ◽  
New Class ◽  
Reductive Immobilization ◽  
Loam Soil

Laboratory batch and column experiments were conducted to investigate the feasibility of using a new class of stabilized zero-valent iron (ZVI) nanoparticles for in situ reductive immobilization of Re (VI) in water and in a sandy loam soil. Column experiments indicated that the stabilized ZVI nanoparticles are highly deliverable in the soil column. The stabilized ZVI nanoparticles may serve as a highly soil-dispersible and effective agent for in situ reductive immobilization of rhenium soils, groundwater, or industrial wastes.

Enhanced Grain Refinement of W18Cr4V High‐Speed Steel using in situ TiN‐Nb‐Cr@Graphene/Fe Nanocomposite Inoculant

2021 ◽  
Author(s):  
Lina Bai ◽  
Chunxiang Cui ◽  
Jianjun Zhang ◽  
Lichen Zhao ◽  
Guixing Zheng ◽  
...  
Keyword(s):  
Grain Refinement ◽  
High Speed ◽  
High Speed Steel

scholarly journals Grain refinement in additively manufactured ferritic stainless steel by in situ inoculation using pre-alloyed powder

2021 ◽  
Vol 194 ◽  
pp. 113690
Author(s):  
A. Durga ◽  
Niklas Holländer Pettersson ◽  
Sri Bala Aditya Malladi ◽  
Zhuoer Chen ◽  
Sheng Guo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Grain Refinement ◽  
Ferritic Stainless Steel ◽  
Alloyed Powder

scholarly journals Roles of Lanthanum and Cerium in Grain Refinement of Steels during Solidification

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 884 ◽  
Author(s):  
Yunping Ji ◽  
Ming-Xing Zhang ◽  
Huiping Ren
Keyword(s):  
Mechanical Properties ◽  
Grain Refinement ◽  
Rare Earths ◽  
Heterogeneous Nucleation ◽  
The Past ◽  
Cast Steels ◽  
Steel Castings ◽  
Similarity And Difference

Refinement of as-cast structures is one of the most effective approaches to improve mechanical properties, formability, and surface quality of steel castings and ingots. In the past few decades, addition of rare earths (REs), lanthanum and cerium in particular, has been considered as a practical and effective method to refine the as-cast steels. However, previous reports contained inconsistent, sometime even contradictory, results. This review summaries the major published results on investigation of the roles of lanthanum or/and cerium in various steels, provides reviews on the similarity and difference of previous studies, and clarifies the inconsistent results. The proposed mechanisms of grain refinement by the addition of lanthanum or/and cerium are also reviewed. It is concluded that the grain refinement of steels by RE additions is attributed to either heterogeneous nucleation on the in-situ formed RE inclusions, a solute effect, or the combined effect of both. The models/theories for evaluation of heterogeneous nucleation potency and for solute effect on grain refinement of cast metals are also briefly summarized.

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