Deformation and Fracture of Materials

Course Information

College	Toyama College	Year	2022
Course Title	Deformation and Fracture of Materials
Course Code	0145	Course Category	Specialized / Elective
Class Format	Lecture	Credits	Academic Credit: 1
Department	Department of Mechanical Engineering	Student Grade	5th
Term	First Semester	Classes per Week	前期:2
Textbook and/or Teaching Materials	Nothing
Instructor	Masuyama Keichi

Course Objectives

In this course, students will aim to understand the theory of dislocation, which microscopically discusses the plastic deformation behavior of materials from the viewpoint of mechanical and material aspects. In addition, students will discuss various metallic material strengthening mechanisms and plastic working on the basis of the dislocation theory. Specifically, the contents stated in "Standard Level of Achievement" in the Rubric are the basic goals of this course.

Rubric

	Ideal Level of Achievement	Standard Level of Achievement	Unacceptable Level of Achievement)
Slip plane, slip direction, slip system	Students understand the slip plane, slip direction, slip system in fcc, bcc, hcp and can correctly explain.	Students can explain the slip plane, slip direction, slip system in fcc, bcc and hcp.	Students can not explain the slip plane, slip direction, slip system in fcc, bcc, hcp.
Schmidt factor	Students understand the Schmidt factor and can correctly calculate the shear stress acting on any crystal plane.	Students understand the Schmidt factor and can determine the shear stress acting on the typical crystal plane.	Students do not understand the Schmidt factor and can not calculate the shear stress acting on a specific crystal plane.
Edge dislocation, screw dislocation, mixed dislocation, Burgers vector	Students understand the atomic arrangement in edge dislocations and screw dislocations and can correctly explain the correlation between dislocation lines and the Burgers vector and the direction of dislocation movement.	Students can imagine the atomic arrangements in edge dislocations and screw dislocations and also explain the Burgers vector.	Students can not image the atomic arrangement in edge dislocations or screw dislocations.
Force acting on dislocation, Forces working between dislocations	Students can correctly calculate the forces acting on dislocations and the forces working between dislocations.	Students know how to calculate the forces acting on dislocations and the forces working between dislocations.	Students do not know how to calculate the forces acting on dislocations and the forces working between dislocations.
Forces acting between dislocations and solute atoms	Students can correctly calculate forces acting between dislocations and solute atoms.	Students can explain how to calculate forces acting between dislocations and solute atoms.	Students can not explain how to calculate forces acting between dislocations and solute atoms.
Dislocation multiplication, Cross slip, Double cross slip	Students can correctly explain dislocation multiplication, cross slip and double cross slip.	Students understand dislocation multiplication, cross slip and double cross slip.	Students do not know dislocation multiplication, cross slip and double cross slip.
Jog, Kink, Dislocation pile-up	Students can correctly explain Jog, Kink and Dislocation pile-up.	Students can correctly explain Jog, Kink and Dislocation pile-up.	Students do not know correctly explain Jog, Kink and Dislocation pile-up.
Cold working, Hot working	Students understand the difference between cold working and hot working, and can explain them correctly.	Students can explain the outline of cold working and hot working.	Students can not explain the outline of cold working and hot working.
Strengthening by solid solution, work hardening, precipitation strengthening, refinement of crystal grains	Students understand strengthen methods for metalic materials and can explain about Strengthening by solid solution, work hardening, precipitation strengthening and refinement of crystal grains.	Students can explain about strengthening by solid solution, work hardening, precipitation strengthening and refinement of crystal grains.	Students can not explain about Strengthening by solid solution, work hardening, precipitation strengthening and refinement of crystal grains.

Assigned Department Objectives

Learning and Educational Objectives of the “General Engineering” A-2 （設計・システム，情報・論理，材料・バイオ，力学，社会技術に関する基礎知識を理解し，簡単に説明することができる。）

JABEE 1(2)(d)(1) （専門工学（工学（融合複合・新領域）における専門工学の内容は申請高等教育機関が規定するものとする）の知識と能力）

JABEE 1(2)(d)(2) （いくつかの工学の基礎的な知識・技術を駆使して実験を計画・遂行し、データを正確に解析し、工学的に考察し、かつ説明・説得する能力）

JABEE 2.1(1) （基礎工学として、①設計・システム系科目群、②情報・論理系科目群、③材料・バイオ系科目群、④力学系科目群、⑤社会技術系科目群の５群からなり、各群から少なくとも１科目、合計最低６科目を含むこと。）

Diploma policy 1 （To develop engineers who comprehensively acquire knowledge, focusing on mechanical engineering as the basis of manufacturing and production technology, and play a role in equipment design, technology development and other engineering-related fields.）

Teaching Method

Outline:

Dislocation theory is an esoteric subject in the field of materials science, but it is important knowledge for understanding the mechanism of plastic deformation and plastic working of metallic materials.

Style:

Lecture

Notice:

Students should earn a credit in subjects related to material science, plastic working and strength of materials.
Can take makeup exam in need aid up to maximum of 60 points.

Course Plan

			Theme	Goals
1st Semester
	1st Quarter
		1st	Dislocation (Slip (plane, direction, system))	understanding dislocation (Slip (plane, direction, system))
		2nd	Dislocation (Slip (plane, direction, system)) and schmid factor	understanding the dislocation (Slip (plane, direction, system)) and schmid factor
		3rd	schmid factor	understanding and various dislocation types and Burgers vector
		4th	edge, screw mixed dislocation and Burgers vector	understanding various dislocation types and Burgers vector
		5th	edge, screw mixed dislocation and Burgers vector	understanding various dislocation types and Burgers vector
		6th	Peierls stress and Frank-Read multiplication mechanism, Hall-Petch equation	understanding the dislocation motion (Peierls stress) and Frank-Read multiplication mechanism and Hall-Petch equation
		7th	multiplication mechanism, Hall-Petch equation	understanding the dislocation motion (Peierls stress) and Frank-Read multiplication mechanism and Hall-Petch equation
		8th	Slip in Metallic Crystals	understanding the Slip in Metallic Crystals
	2nd Quarter
		9th	Slip in Metallic Crystals	understanding the Slip in Metallic Crystals
		10th	kink, jog and strain hardening	understanding kink, jog and work hardening
		11th	kink, jog and strain hardening	understanding kink, jog and work hardening
		12th	strain hardening and Dislocation density	understanding strain hardening and Dislocation density mechanism
		13th	strain hardening, precipitation strengthening and solid solution strengthening	understanding strain hardening, precipitation strengthening and solid solution strengthening
		14th	strain hardening, precipitation strengthening and solid solution	understanding strain hardening, precipitation strengthening and solid solution strengthening
		15th	Term-end examination
		16th	Show final results and Survey on this course	Return of answer sheets and presentation of final evaluation

Evaluation Method and Weight (%)

	Examination	Report	Total
Subtotal	80	20	100
Basic Ability	40	10	50
Technical Ability	40	10	50