- Email: [email protected]
Yield, flow and fracture of polycrystals
379 o f the c o m p o n e n t taking the strength, stiffness or life as the basis. After introducing the basics in the first chapter and strength and stiffness considerations in the n e x t two, a chapter on materials and their properties is newly i n t r o d u c e d in this edition of the book. The data about the properties of some c o m m o n engineering materials are appended. While this is a welcome addition, the reviewer believes that data regarding the use of high-strength alloys, properties and uses of lightweight and composite materials, if presented, would have been of immense use and perhaps introduced the student to the changing trends in the materials. The photographs of failed c o m p o n e n t s and their description with which the authors open the chapter on design for strength are very interesting and informative. Fracture mechanics is introduced in an elementary manner and toughness is used as a design criterion in a few problems. The importance of fatigue in design has p r o m p t e d a full chapter on this topic. Several new features are introduced here. The rest of the book has the same form as before but new material is introduced in several chapters. The new materials and design methods for belts, the new fastener standards, t r e a t m e n t of pre-loading of bolts, introduction of some finite element data on a weld analysis, analysis of spring surge and optimisation techniques are but a few examples. While the treatm e nt of rolling c o n t a c t bearings is unchanged from the previous edition, multiviscosity charts (lubrication and journal bearings) for lubricants, new tables on Lewis f or m factors and AGMA geometry factors (gears), a fresh and elegant t r e a t m e n t (brakes) taking into account t e m p e r a t u r e rise and energy dissipation are also new and some of them are presented, perhaps, for the first time in the present book. One of the most interesting features of the b o o k is the inclusion of programming suggestions and problems t h r o u g h o u t , encouraging the student to use programmable calculators for solving design problems. All in all, the reviewer believes that this edition will be m ore useful, popular and better appreciated by the users than the earlier editions. The publishers have to be c o m m e n d e d for bringing out a paperback edition also, at a price which is certainly good value for the book. It is strongly r e c o m m e n d e d that in any f u tu r e editions the book should be fully metricated. T.Y. REDDY
Yield, Flow and Fracture of Polycrystals, edited by T.N. Baker, Applied Science Publishers, L ondon, 1983. ISBN 0-85334-225-3, xi + 361 pages, illustrated, hard-cover, £42.00. The research achievements of Professor N.J. Petch were h o n o u r e d at a two-day meeting held at the University of Strathclyde, Glasgow, during Sept e m b e r 1982. This b o o k is the proceedings of t hat meeting, which dealt with topics which have been of particular interest to Professor Perch and c.gmprises three sections, dealing with yield and flow, fracture and the application of the Hall--Petch relationship.
380 The first section, comprising four chapters, provides a useful review of the relationship between mechanical properties and grain size as orginally developed by Petch to explain the yield point behaviour and cleavage strength of a-iron polycrystals, and considers more recent applications of the Hall-Petch analysis. The plastic deformation of polycrystalline aluminium and some aspects of two-phase alloys consisting of hard constituents embedded in a soft matrix are also discussed. These materials encompass some technologically important steels such as pearlitic and spheroidised steels, dual-phase (ferritic--martensitic) steels as well as duplex titanium alloys and cemented carbides. There is also some discussion of the plasticity of metals containing voids related to the ductile fracture process. The fracture of polycrystalline materials, both metallic and ceramic, is dealt with in the second section, a review of the main concepts associated with trans-granular cleavage fracture in mild steel, as pioneered by Petch, being particularly enlightening. The third section deals with the application of the Hall--Petch t y p e relationships and provides a most comprehensive review, containing some 99 references of the important predictive application to the effects of grain size on the mechanical properties of a wide range of ferrous materials and microstructures. Further discussion of pearlitic and high-strength low-alloy steels is also given. A useful insight into the measurement of the parameters of the Hall--Petch equation is presented and the application of the Hall--Petch analysis to non-ferrous materials is also discussed. In terms of its appeal, this collection of papers is a mixture of both detailed research studies and the practical applications of these studies. Research workers wishing to understand and explore the nature of the detailed relationships between microstructure, sub-microstructure and mechanical properties will find information of benefit while metallurgists and materials engineers can gain an appreciation of these relationships at a practical level. The pioneering groundwork of Professor Petch led to a number of fundamentally important relationships being established in the field of metals and alloys and this book amply reviews their importance in our understanding of the structure/property behaviour and in utilising'the relationships for materials design. W.F. DEANS
Statics and Strength of Materials, (4th edition) by A. Jensen and H.H. Chenoweth, McGraw-Hill, Maidenhead, 1983. ISBN 0-07-032494-8, xiii + 426 pages, illustrated, hardcover, £23.50. This text is aimed at "college students in engineering and architecture ... and those in junior and c o m m u n i t y colleges, technical institutes, and in many industrial training and Armed Services programs". In the United Kingdom the corresponding market lies in technician/higher technician courses, and the treatment of topics in the book accords with this. It uses both S.I. and American foot/lb/second unit systems; the majority of worked and set examples use the latter. Statics, and Strength of Materials, are treated in two
Yield, Flow and Fracture of Polycrystals, edited by T.N. Baker, Applied Science Publishers, L ondon, 1983. ISBN 0-85334-225-3, xi + 361 pages, illustrated, hard-cover, £42.00. The research achievements of Professor N.J. Petch were h o n o u r e d at a two-day meeting held at the University of Strathclyde, Glasgow, during Sept e m b e r 1982. This b o o k is the proceedings of t hat meeting, which dealt with topics which have been of particular interest to Professor Perch and c.gmprises three sections, dealing with yield and flow, fracture and the application of the Hall--Petch relationship.
380 The first section, comprising four chapters, provides a useful review of the relationship between mechanical properties and grain size as orginally developed by Petch to explain the yield point behaviour and cleavage strength of a-iron polycrystals, and considers more recent applications of the Hall-Petch analysis. The plastic deformation of polycrystalline aluminium and some aspects of two-phase alloys consisting of hard constituents embedded in a soft matrix are also discussed. These materials encompass some technologically important steels such as pearlitic and spheroidised steels, dual-phase (ferritic--martensitic) steels as well as duplex titanium alloys and cemented carbides. There is also some discussion of the plasticity of metals containing voids related to the ductile fracture process. The fracture of polycrystalline materials, both metallic and ceramic, is dealt with in the second section, a review of the main concepts associated with trans-granular cleavage fracture in mild steel, as pioneered by Petch, being particularly enlightening. The third section deals with the application of the Hall--Petch t y p e relationships and provides a most comprehensive review, containing some 99 references of the important predictive application to the effects of grain size on the mechanical properties of a wide range of ferrous materials and microstructures. Further discussion of pearlitic and high-strength low-alloy steels is also given. A useful insight into the measurement of the parameters of the Hall--Petch equation is presented and the application of the Hall--Petch analysis to non-ferrous materials is also discussed. In terms of its appeal, this collection of papers is a mixture of both detailed research studies and the practical applications of these studies. Research workers wishing to understand and explore the nature of the detailed relationships between microstructure, sub-microstructure and mechanical properties will find information of benefit while metallurgists and materials engineers can gain an appreciation of these relationships at a practical level. The pioneering groundwork of Professor Petch led to a number of fundamentally important relationships being established in the field of metals and alloys and this book amply reviews their importance in our understanding of the structure/property behaviour and in utilising'the relationships for materials design. W.F. DEANS
Statics and Strength of Materials, (4th edition) by A. Jensen and H.H. Chenoweth, McGraw-Hill, Maidenhead, 1983. ISBN 0-07-032494-8, xiii + 426 pages, illustrated, hardcover, £23.50. This text is aimed at "college students in engineering and architecture ... and those in junior and c o m m u n i t y colleges, technical institutes, and in many industrial training and Armed Services programs". In the United Kingdom the corresponding market lies in technician/higher technician courses, and the treatment of topics in the book accords with this. It uses both S.I. and American foot/lb/second unit systems; the majority of worked and set examples use the latter. Statics, and Strength of Materials, are treated in two