scholarly journals Influence of As-Cast Microstructure on the Impact Wear Resistance of 27 mass%Cr Cast Iron

2019 ◽  
Vol 60 (11) ◽  
pp. 2475-2480 ◽  
Author(s):  
Ngo Huynh Kinh Luan ◽  
Koreaki Koizumi ◽  
Kuniaki Mizuno ◽  
Yutaka Yamada ◽  
Tetsuya Okuyama
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Impact Wear ◽  
The Impact ◽  
Cast Microstructure

Effect of three-staged normalizing on the impact wear resistance of 3.23 mass% Cr-Mn-Cu-Si cast iron

Wear ◽  
2019 ◽  
Vol 426-427 ◽  
pp. 59-67 ◽  
Author(s):  
Yi Li ◽  
Renbo Song ◽  
Zhiyang Zhao ◽  
Yu Pei
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Impact Wear ◽  
The Impact

An Impact-Abrasion Resistant Surfacing Electrode and its Wear-Resistant Mechanism

2008 ◽  
Vol 373-374 ◽  
pp. 547-550
Author(s):  
Zheng Jun Liu ◽  
Xie Bo Zeng
Keyword(s):  
Experimental Investigation ◽  
Wear Resistance ◽  
Work Hardening ◽  
Alloy System ◽  
Wear Loss ◽  
Impact Wear ◽  
Technological Properties ◽  
Wear Resistant ◽  
Abrasion Test ◽  
The Impact

Aiming at improving the impact wear-resistant performance of metals, a new sort of surfacing electrode named TKCE50 was developed in this paper. This electrode is a Fe-Mn-Cr-Mo-V alloy system and belongs to iron-base wear-resistant materials. Tests like hardness, wear loss and impact-abrasion test were performed on the samples surfaced with the electrode. The results indicated that TKCE50 had not only good welding technological properties, but also super work-hardening effect and perfect impact wear-resistance. In addition, the work-hardening and wear-resistant mechanisms for this electrode were discussed based on corresponding experimental investigation and theoretical analysis.

Fabrication of TiC Particles Reinforced Hadfield Steel Matrix Composite and its Wear-Resistance

2007 ◽  
Vol 336-338 ◽  
pp. 1442-1444
Author(s):  
Xiao Le Cheng ◽  
Yi Min Gao ◽  
Jian Dong Xing ◽  
Min Tan ◽  
Guo Shang Zhang ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Liquid Phase Sintering ◽  
Hadfield Steel ◽  
Impact Loads ◽  
Steel Matrix ◽  
Matrix Composites ◽  
Impact Wear ◽  
Wear Resistant ◽  
The Impact ◽  
Wear Tests

The TiC particles are selected as reinforced phase and the Hadfield steel as matrix. The powder metallurgy liquid phase sintering technique is adopted to fabricate TiC particles reinforced Hadfield steel matrix composites. The effects of elements Mo and Ni on the performance of the composites were studied. The impact wear tester is adopted to investigate the wear-resistant property of the composites under the different impact loads. Adding Mo can improve the interfacial bonding between the Hadfield steel and TiC, and the best adding ratio between Mo and TiC is 1:3.68. Adding 2%(vol.%)Ni can significantly improve the density and hardness of the composites. The experiment results of impact wear tests show that under the condition of low and middling loads, the composites display the best wear-resistant properties, moreover, the more TiC content is, the better wear-resistance property is. Under 2.0J impact energy, the wear resistance of the composite containing 40%(vol.%) TiC is 1.3 times of Hadfield steel.

scholarly journals Laser Surface Hardening of Ni-hard White Cast Iron

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 795
Author(s):  
Samar Reda Al-Sayed ◽  
Ahmed Magdi Elshazli ◽  
Abdel Hamid Ahmed Hussein
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Impact Toughness ◽  
Surface Hardening ◽  
White Cast Iron ◽  
Laser Surface ◽  
Hard Alloys ◽  
The Core ◽  
Laser Surface Hardening ◽  
The Impact

Laser surface treatment on two different types of nickel–chromium white cast iron (Ni-hard) alloys (Ni-hard 1 and Ni-hard 4) was investigated. Nd:YAG laser of 2.2-kw with continuous wave was used. Ni-hard alloys are promising engineering materials, which are extensively used in applications where good resistance to abrasion wear is essential. The conventional hardening of such alloys leads to high wear resistance nevertheless, the core of the alloy suffers from low toughness. Therefore, it would be beneficial to harden the surface via laser surface technology which keeps the core tough enough to resist high impact shocks. A laser power of different levels (600, 800 and 1000 Watts) corresponding to three different laser scanning speeds (3, 4 and 5 m·min−1) was adopted hoping to reach optimum conditions for wear resistance and impact toughness. The optimum condition for both properties was recorded at heat input of 16.78 J·mm−2. The present findings reflect that the microhardness values and wear resistance clearly increased after laser hardening by almost three times due to laser surface hardening, whereas, the impact toughness was increased from five joules obtained from conventionally heat-treated samples to 6.4 J as gained from laser-treated samples.

Microstructure and Property of the New Type White Cast Iron

2008 ◽  
Vol 51 ◽  
pp. 31-40 ◽  
Author(s):  
Xian Liang Zhou ◽  
Xiao Zhen Hua ◽  
Jian Yun Zhang ◽  
Yong Jin Tang ◽  
Qing Jun Chen
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
White Cast Iron ◽  
Heating Temperature ◽  
Xrd Analysis ◽  
Cr Content ◽  
The Matrix ◽  
New Type ◽  
Si Content ◽  
The Impact

The influences of the different Si (0.723%~4.5%) and Cr (2.0%~8.0%) contents on the microstructures and properties of Cr-Si-Mn white cast iron were investigated. It is shown that with increasing of amounts of Si and Cr elements, carbide undergoes an evident change in the morphology from the continuous net to isolated stripe and becomes clearly finer, even forms chrysanthemum-like microstructure which is usually found in high Cr white cast iron. Additionally, the amounts of the carbides increase too. The XRD analysis shows that the carbides are a mixture of Fe3C and Fe7C3 phases. Furthermore, the hardness of carbide and matrix is also found to progressively increase with increasing of amounts of Si and Cr elements. The hardness of the matrix in as-cast white cast iron is over HV400, suggesting that the matrix consists of martensite and bainite phases. The impact toughness of the samples declines evidently when Si content excesses 3.0wt%. It is also revealed that the bainite matrix in the Si-Cr white cast iron has a higher impact abrasive wear resistance than others, which is almost not dependent upon heating temperature and cooling rate. When Cr content approaches 5wt%, the impact wear resistance of the new cast iron is comparable to that of the traditional high Cr cast iron.

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