本书机械工程材料课程英文教材,既可用做双语教学,也可用于专业英语学习。本教材的特色是讲述内容符合国内实际,如在相关一些材料牌号上选用了国内名称,避免了外文同类教材国外材料牌号与国内不一样的问题。其次,本教材语言通俗易懂,除了一些必备的专业名词外,论述避免了大段的从句或不常用的生僻字,让学生便于理解。本书是基于“工程材料”是机械或近机械专业的一门专业基础课,本教材出版后应该具有较可观的市场前景。
前 言
本书为“机械工程材料”课程的双语教学配套教材。该课程属于工科院校机械类专业的一门专业基础课。目前,在高校的教学中运用双语教学已成为教学改革的重点和热点。早在2001年,国家教育部发出的《关于加强高等学校本科教学工作提高教学质量的若干意见》的文件,就明确提出在大学推广双语教学。按照“教育要面向现代化、面向世界、面向未来”的要求,为适应经济全球化和科技国际化的挑战,本科教育要创造条件使用英语等外语进行公共课和专业课的教学。本书的编写筹备多年,主要素材来自于多年的双语教学实践过程积累的英语讲义及科研实践中的第一手资料;同时在本书编写过程中,作者也参考了国内外相关教材、著作及文献。
本书的编写,主要强调两大特点。一为英语语言的简单平实,通俗易懂。双语教学的开展,最大的障碍在于语言。我们在准确表达相关专业术语的前提下,力求用科技论文式的论述来表达所述知识点,尽量做到浅显、易懂,避免文中出现大量的复杂句型、生僻字等。二为内容的联系实际、贴近生活。“机械工程材料”课程涵盖的知识面较广,包含了常用工程材料的性能、结构、加工及热处理方面的相关知识。由于“机械工程材料”为学科基础课,学生往往不具有较深厚的实践经验。因此,本书在编写时,相关素材的选取力求与生活紧密相关,从而使学生能更好地去体会和理解所述知识点。
全书共分为13章。第4章、第5章、第6章、第8章、第10章、第12章及第13章由陈朝霞、满华、李力编写;第2章、第3章、第7章及第9章由何柏林、李树桢编写;第11章由匡唐清编写;第1章由徐先锋编写。全书由陈朝霞、何柏林统稿。作者还为本书配备了精美的课件,供购买者免费索取。
由于作者水平有限,本书难免存在不当之处,敬请读者批评指正。
作 者
2016年5月10日
陈朝霞,湖北荆州人,昆明理工大学机械专业毕业,南昌大学攻读机械工程材料方向博士在读,现为华东交通大学机电工程学院讲师,主要从事材料成型的研究工作,主持或参与课题多项,发表文章20余篇,已参编化学工业出版社组织的《机械工程材料》《材料成型工艺基础》2部。
Contents
Chapter 1 Introduction 1
1.1 Concepts and sorts of materials and what the function and status of
the material are in society revolution 2
1.2 Conteat and Relation of materials science and engineering 5
1.3 Development of materials 7
1.4 Materials and mechanical engineering 10
Chapter 2 The Mechanical Properties Of Metals 13
2.1 Introduction 13
2.2 Static mechanical properties 14
2.3 Hardness tests 22
2.4 Impact toughness 27
2.5 Fracture toughness 30
2.6 Fatigue tests 32
2.7 Test at elevated tempearatures 34
2.8 Variability of material properties 35
Chapter3 Crystal Structure and Crystallizing 37
3.1 Crystal structure of metals 37
3.2 Actual structure of metals 47
3.3 Crystallization of metal 53
3.4 Structure of steel ingot 59
Chapter4 Plastic Deformation and Recrystallization of Metal 62
4.1 Plastic deformation of metal 62
4.2 Effects of plastic deformation on structure and property of metal 67
4.3 The change of structure and property of deformed metal during heating 70
4.4 Hot working of metal 75
4.5 Superplasticity 76
Chapter5 Binary Alloy 78
5.1 Definitions and basic concepts 78
5.2 Phase structure of alloy 80
5.3 Binary alloy diagram 83
Chapter 6 Iron Carbon Alloys 99
6.1 Phase structure and properties of iron carbon alloys 99
6.2 Iron carbon equilibrium diagram 101
6.3 Plain carbon steels 115
Chapter 7 Heat Treatment of Steel 120
7.1 Introduction 120
7.2 Formation of austenite during heating 122
7.3 Decomposition of austenite during cooling 129
7.4 Annealing of steel 140
7.5 Normalising of steel 144
7.6 Hardening of steel 146
7.7 Tempering of steel 159
7.8 The surface quenching of steel 165
7.9 The chemical heat treatment of the steel 170
Chapter 8 Alloy Steels 177
8.1 Effects of alloying elements in steel 177
8.2 Mechanisms of strengthening in metals 183
8.3 Categories and code of alloy steels 186
8.4 Structural alloy steels 186
8.5 Tool steels 195
8.6 Steels for special use 202
Chapter 9 Cast Iron 207
9.1 Introduction 207
9.2 Graphitisation of cast iron 207
9.3 Classify of cast iron 209
9.4 Grey cast iron 211
9.5 Malleable cast iron 214
9.6 Spheroidal cast iron 218
9.7 Vermicular cast iron 223
9.8 Alloy cast iron 224
Chapter10 Nonferrous Metals and Their Alloys 228
10.1 Aluminum and its alloys 229
10.2 Copper and its alloys 237
10.3 Magnesium and its alloys 241
10.4 Titanium and their alloys 243
10.5 Bearing alloys 247
Chapter 11 Polymer 250
11.1 Introduction 250
11.2 Classification of polymers 251
11.3 Structural characteristics of polymers 255
11.4 Properties of polymers and plastics 266
11.5 Additives for plastic materials and compounding 277
11.6 Polymer processes 279
11.7 Properties and utilities of selected polymers 283
Chapter 12 Advanced Materials 285
12.1 Introduction 285
12.2 Information functional materials 285
12.3 Composite materials 286
12.4 Smart materials 292
12.5 Nanomaterials 294
12.6 Biomaterial 300
12.7 Porous materials 301
Chapter 13 Material Selecting for Parts 304
13.1 Failure of mechanical parts 304
13.2 General principles for selecting suitable materials 310
13.3 Selecting suitable material for typical parts and working process 311
References 316
1.3 Development of materials
Materials themselves are foundations and supports of material civilization, and they also support the developments of other new technology in the exploitation, refinement, transformation and transportation of energy resource and the transmission, storage application and control of information cannot be apart from material technology; and structure materials and functional material are necessary for space technology, ocean engineering, biological engineering and system engineering.
Materials are always faced with the choice of society, and this choice depends on the requirement of society. Five criterions are required to decide whether one material can be accepted by society: resource, energy resource, environmental protection, economic and performance. When the restrictions of resource, energy resource, environment are satisfied, the property and economic efficiency material should also be concerned.
The development of material is in competitive conditions all the time. One of them is the competition between metal materials, ceramic materials and high polymer materials; the other one is different types of competition in the categories of materials, such as competition between ferrous metals and nonferrous metals, but they all belong to the metal. The average weight of a car in America was 1 500 kg in 1980 and reduced to 1 020 kg in 1990. The proportion of cast iron dropped from 15% to 11%. The amount of cast iron in one car dropped from 225 kg to 112 kg; the proportion of aluminum alloy rose from 4% to 9%; the proportion of high polymer materials rose from 6% to 9%. Automobile engines which adopt ceramic materials replaced automobile engines which adopt metal materials, which bring significant economic effect. Ceramic can withstand much higher temperature than metal, thus burning efficiency of ceramic can be improved, and the weight of automobile engine can be decreased at the same time. Because of that, the development of ceramic material based engine is blooming all around world.
Besides, symbiotic relationships between materials, can also be mutual promotion. For example, slag is byproduct of blast furnace iron making, but slag can be raw material of cement; the byproduct of coking-artificial coal, is an important chemical material.
Concerning the further development of the material, there are two aspects to disscuss, one is the improvement of traditional materials, while the other one is the development of new materials.
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