2019 Reliability and Durability of Metals and Alloys

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Academic unit or major
Graduate major in Materials Science and Engineering
Kobayashi Equo  Kobayashi Satoru  Kumai Shinji 
Course component(s)
Day/Period(Room No.)
Mon3-4(S8-501)  Thr3-4(S8-501)  
Course number
Academic year
Offered quarter
Syllabus updated
Lecture notes updated
Language used
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Course description and aims

Reliability and durability are highly required in use of metallic materials for structural applications such as automobiles, airplanes and thermal power plants etc. This course first gives an introduction of fracture of metallic materials in real applications and fracture manners. The introduction is followed by basic lectures on fracture mechanics, fatigue and creep deformation which are important phenomena in terms of reliability and durability of metallic materials. In the lectures on fatigue you will study S-N curves, and nucleation and propagation of cracks. In the lectures on creep deformation students will learn high temperature deformation mechanisms and design principle of the materials for improved durability.

Student learning outcomes

Students will be able to:
1) Understand the importance of reliability and durability of metallic materials for structural applications.
2) Understand the basics of fracture toughness and its importance in terms of reliability of metallic materials.
3) Understand the basics of fatigue and creep deformation and its importance in terms of the durability of metallic materials.
4) Understand how to design, select and test metallic materials to be used for structural applications.


Creep deformation, Strengthening mechanisms, Degradation of microstructure, Heat resistant alloys/steels

Competencies that will be developed

Intercultural skills Communication skills Specialist skills Critical thinking skills Practical and/or problem-solving skills
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Class flow

The classes in this course contain quizzes and exercises to understand the contents.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Fracture of metallic materials and related failure
Class 2 Characteristics of fracture and fracture manner in metallic materials
Class 3 Fracture mechanics I - Mechanics of crack
Class 4 Fracture mechanics II - Parameters of fracture mechanics
Class 5 Fracture toughness
Class 6 S-N curve and fatigue limit
Class 7 Fatigue crack initiation and propagation
Class 8 Fatigue life prediction
Class 9 Achievement evaluation and general practice
Class 10 Creep deformation, creep strength, allowable stress and creep tests Understand creep deformation, creep strength, allowable sterss and creep test methods.
Class 11 High temperature deformation mechanisms Understand high temperature deformation mechanisms.
Class 12 Dislocation creep mechanism I (Phenomenology and elementary process) Understand dislocation creep mechanisms in terms of phoenomenology and atomic processes.
Class 13 Dislocation creep mechanim II (Strengthening mechanisms) Understand strengthening mechanisms in dislocation creep mechanisms.
Class 14 Creep strength vs. microstructure relationships Understand microstructural factors to affect creep strength.
Class 15 Microstructural design principle of heat resistant alloys/steels Understand design principle of heat resistant alloys/ steels for improved durability.


No textbook is set.

Reference books, course materials, etc.

Zairyo-kyodo-gaku: Kato, Kumai, Onaka (Asakura shoten)

Assessment criteria and methods

Short quiz and questionnaire: 30%
Final examination: 70%
The criteria of credit: 60 points and higher

Related courses

  • MAT.M303 : Lattice Defects and Dislocation

Prerequisites (i.e., required knowledge, skills, courses, etc.)

None required.

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