Post-machining plastic recovery and the law of abrasive wear

Abdelmoneim, M.Es.; Scrutton, R. F.

doi:10.1016/0043-1648(73)90198-1

Cited by 19 publications

(5 citation statements)

References 4 publications

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“…Fig. 15.13 Influence of the rake angle on chip formation [56] Vyas and Shaw on the other hand confirm the crack initiation presented in Fig. 15.15.…”

Section: Machining Of Titanium Alloyssupporting

confidence: 84%

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Titanium and Titanium Alloy Applications in Medicine

Jackson

Kopač

Balažic

et al. 2016

Surgical Tools and Medical Devices

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Titanium is a transition metal. It is present in several minerals including rutile and ilmenite, which are well dispersed over the Earth's crust. Even though titanium is as strong as some steels, its density is only half of that of steel. Titanium is broadly used in a number of fields, including aerospace, power generation, automotive, chemical and petrochemical, sporting goods, dental and medical industries. The large variety of applications is due to its desirable properties, mainly the relative high strength combined with low density and enhanced corrosion resistance. This chapter discusses the applications of titanium and its alloys in the medical field. Metallurgical Aspects IntroductionAmong the metallic materials, titanium and its alloys are considered the most suitable materials in medical applications because they satisfy the property requirements better than any other competing materials, such as stainless steels, CrCo alloys, commercially pure (CP) Nb and CP Ta [1][2][3][4][5][6]. In terms of biomedical applications, the properties of interest are biocompatibility, corrosion behavior, mechanical behavior, ability to be processed, and availability [7][8][9].Titanium may be considered as being a relatively new engineering material. It was discovered much later than the other commonly used metals, its commercial application started in the late 1940s, mainly as structural material. Its usage as implant material began in the 1960s [10]. Despite the fact that titanium exhibits superior corrosion resistance and tissue acceptance when compared with stainless M.J. Jackson (&) Kansas State University, Salina, KS, USA e-mail: jacksonmj04@yahoo.com [11]. To overcome such restrictions, CP titanium was substituted by titanium alloys, particularly, the classic grade 5, i.e., Ti-6Al-4V alloy. The Ti-6Al-4V α + β-type alloy, the most worldwide utilized titanium alloy, was initially developed for aerospace applications [12,13]. Although this type of alloy is considered a good material for surgically implanted parts, recent studies have found that vanadium may react with the tissue of the human body [2]. In addition, aluminum may be related with neurological disorders and Alzheimer's disease [2]. To overcome the potential vanadium toxicity, two new vanadium-free α + β-type alloys were developed in the 1980s. Vanadium, a β-stabilizer element, was replaced by niobium and iron, leading to Ti-6Al-7Nb and Ti-5Al-2.5Fe (α + β)-type alloys [4,6,14]. While both alloys show mechanical and metallurgical behavior comparable to those of Ti-6Al-4V, a disadvantage is that they all contain aluminum in their compositions.In recent years, several studies have shown that the elastic behavior of α + β-type alloys is not fully suitable for orthopedic applications [15][16][17][18]. A number of studies suggest that unsatisfactory load transfer from the implant device to the neighboring bone may result in its degradation [9]. Also, numerical analyses of hip implants using finite element method indicate that the use of biomaterials wi...

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“…Fig. 15.13 Influence of the rake angle on chip formation [56] Vyas and Shaw on the other hand confirm the crack initiation presented in Fig. 15.15.…”

Section: Machining Of Titanium Alloyssupporting

confidence: 84%

“…When [55] the influence of the rake angle on the chip formation [56] has been investigated, it has been determined that the rake angle has a critical value of −70°when machining zinc, after which there is no chip formation (Fig. 15.13).…”

Section: Machining Of Titanium Alloysmentioning

confidence: 99%

Titanium and Titanium Alloy Applications in Medicine

Jackson

Kopač

Balažic

et al. 2016

Surgical Tools and Medical Devices

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“…1). In another [25], plastic recovery is suggested (level ii). Others [7,10,11,14,15,21] assume full elastic recovery in which the workpiece recovers to the height of S after it has passed the tool (level iii).…”

Section: Models For Materials Flow Around the Cutting Edgementioning

confidence: 99%

An Evaluation of Ploughing Models for Orthogonal Machining

Waldorf

DeVor

Kapoor

1999

Journal of Manufacturing Science and Engineering

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“…Based on the rake angle of cutting tools, no chips were reported to be formed at -55° rake angle while they were shown to have formed at -75° rake angle. Abdelmoneim and Scrutton reported that in milling of free-cutting brass and fine-grained zinc with very dull tool whose rake angle was more than -76° retarded the chip formation process [71]. L'vov evaluated the minimum chip thickness, by considering the theory of metal rolling, to be 29.3% of the tool edge radius [72].…”

Section: Minimum Chip Thickness Effectmentioning

confidence: 99%

The Size Effect in Micromachining

Mian¹

2005

Microfabrication and Nanomanufacturing

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List of PublicationsDeclaration Copyright Statement Dedication Acknowledgements CHAPTER ONE 3.2.4 Tool wear measurement 3.2.5 Subsurface microstructure measurement 3.2.6 Micro chips characterisation 3.3 Experimental setup 3.4 Experimental procedure 3.5 Acoustic emission signal processing CHAPTER FOUR A Comparative Study of Material Phase Effects on Micro-Machinability of Multiphase Materials Abstract 4.1 Introduction 4.1.1 Micro machining 4.1.2 Material microstructure effect on surface generation in micro machining 4.1.3 Burrs in micromachining 5 4.1.4 Research motivation 4.2 Experimental details and evaluations 4.2.1 Material metallographic grain size measurement 4.2.2 Material characterisation using instrumented indentation testing 4.2.3 Experimental details and cutting parameters 4.3 Micro milling results and discussions 4.3.1 Surface roughness 4.3.2 Subsurface microstructure modification 4.3.3 Burr formation 4.3.4 Tool wear 4.4 Conclusions CHAPTER FIVE Identification of Factors that Dominates "Size Effect" in Micro Machining Abstract 5.4.2.3 Burr formation 5.4.2.4 Energy bands and micro milling mechanism 5.5 Optimum process parameters and confirmation tests 5.6 Conclusions CHAPTER SIX Chip Formation in Micro-Scale Milling and Correlation with Acoustic Emission Signal Abstract 6.1 Introduction 6.2 Research methodology 6.3 Micro milling experiments 6.4 Results and discussions 6.4.1 Chip morphology 6.4.1.1 Chip morphology below tool edge radius 6.4.1.2 Chip morphology above tool edge radius 6.4.2 Acoustic emission in micro cutting 6.4.2.1 AE and chip formation 6.4.2.2 Specific AE energy 6.5 Conclusions CHAPTER SEVEN Estimation of Minimum Chip Thickness in Micro Milling using Acoustic Emission Abstract 7.1 Introduction 7.2 Experimental plan 7.2.1 Micro milling tests 7.2.2 AE signal acquisition 7.3 Research methodology 7.4 Results and discussions 7.4.1 AE signal in rubbing dominated region 7.4.2 AE signal in shearing dominated region 7.5 Boundary conditions for successful implementation of this methodology 7.6 Conclusions

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Post-machining plastic recovery and the law of abrasive wear

Cited by 19 publications

References 4 publications

Titanium and Titanium Alloy Applications in Medicine

Titanium and Titanium Alloy Applications in Medicine

An Evaluation of Ploughing Models for Orthogonal Machining

The Size Effect in Micromachining

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