Quench and temper Lab Report Example | Topics and Well Written Essays - 750 words - 1

Quench and temper - Lab Report Example The first step in a quench and temper process is the intense heating that that aims at ensuring homogeneity of the steel’s elements and requires a temperature that is above the component’s transformation potential. This therefore eliminates possible asymmetries that reduce strength of normal steel. The sudden cooling then yields a â€Å"body centered ‘martensite’, which is hard† but is brittle (Black and Kohser, 2011, p. 133). The temper process however, defines a reheating of the material, at moderate temperatures to reduce the brittleness towards more malleable material (Black and Kohser, 2011, p. 133). The achieved strength of the material however depends on a number of factors. One of the factors that determine the achieved strength, and toughness, of a material from a quench and temper process is the level of orientation of microelements of the materials. Quenching and tempering process alignS the microelements to a level of homogeneity, a process that is done at the tempering process. Homogeneity can however only be achieved if the material is heat to a higher temperature, above the transformation level of each element of the material. A lower temperature exposure, relative to the elements’ transformation temperature is therefore expected to have little impacts on the achieved level of toughness and strength of a material while a high temperature heating is likely to achieve an increased level of toughness and strength. This factor directly relates to the nature of treatment (Shah, 2007, p. 58). The nature of treatment that a material is subjected to also plays a role in the acquired strength. Inappropriate processes are for instance identified with lower gained strength and hardness. In some cases however, poor treatment conditions even worsen a material’s strength and hardness to make it weaker than its original condition. Other factors that affect the effects of

Beyonce Knowles Essay Example | Topics and Well Written Essays - 2500 words

Beyonce Knowles - Essay Example This essay "Beyonce Knowles" outlines the life and creative career of one of the most successful artists in the World. Although she has gone solo, Beyonce is still a part of the Destiny’s Child music group. Music consumers have purchased more than 15 million of the Destiny’s Childs records. Their multiplatinum Survivor, debuted at No. 1 on Billboard's music chart and generated the highest first-week total for a female group and the biggest opening sales in Columbia Records' history. Survivor opened at No. 1 in nine other countries as well. It follows the success of the group's second CD, The Writing's On the Wall (1999), which has sold more than 10 million copies. Beyonce Knowles has achieved a phenomenal solo success in film acting, having co-starred in Austin Powers in Goldmember and the highly successful film, the The Fighting Temptations. She shares her personal perspective on success: "When you love and accept yourself, when you know who really cares about you, and when you learn from your mistakes, then you stop caring about what people who don't know you think. Usually the person talking is just jealous or sad about themselves, and it takes going through this to realize that's how life is." Beyonce’s parents were instrumental to her success and they continue to manage her singing career. Mathew Knowles, a Fisk University graduate and former corporate marketing and sales star, has built a reputation for being an astute, hands-on manager who engineered Destiny’s Child group’s success. 's Child group's success. He manages a music empire that includes a management firm, record label and production studio. Tina Knowles is the style maven who crafted the group's edgy, sassy image. She has received praise for her dazzling, trendsetting costumes and hairstyles for the group. The Knowleses have been supportive from the very beginning, when Beyonce and a group of young girls decided they wanted to be dancers and singers. They hel ped to train and to rehearse the girls, to select and sew the costumes, and to style hair. The Knowleses booked and helped to transport them to performances. She got her work ethic from her parents. She is a very focused artist. She knows her goals. She does whatever it takes to get the job done. She has come out in Pink Panther with Austin Myers and in Dreamgirls. 2.1 Current Product Beyonce is 27 years old, 5ft 7in, brown-eyed and brown-haired musical star. She has long, muscular legs but is tall, thin and very curvy and hopes to stay that way by looking after her body. To keep herself in top

The Visit to Kenya Essay Example | Topics and Well Written Essays - 1000 words

The Visit to Kenya - Essay Example The country had a remarkable and beautiful climate. The wide distribution of green plants all over the place shocked me. The trees and birds were beautiful against clear bright blue skies, this contrasted sharply with Saudi Arabia, and I realized that Africa is so much blessed with a remarkable natural environment. They do not require artificially controlled environments in their homes. The temperatures are exceptionally cool at all times of the day, and I appreciate my cousin for insisting that I visit him in this wonderful part of the globe. I had always been fascinated by the majestic lions since I learned about them in Pre-School and I now had an opportunity to spot one in the wild. After traveling for several hours in the Tsavo plains, our tour guide suddenly told our driver to slow down, and he pointed towards a large tree. The sight was beautiful; I saw the largest lion I have ever seen resting under the tree. We saw very many other beautiful animals in the wild. The clouds opened on our way from the recreational area. It was such a superb thing with a mixture of so many pleasant smells around me. I was taken back to reality when our vehicle skidded and came to a sudden stop, and our driver declared that we were mud stuck. We alighted from the vehicle and Mabrouk solemnly declared that only a tow truck could remove the tour van from the muddy pothole. After several minutes, a number of Africans came clad in bright red clothing and after talking with the driver, for a minute, they succeeded in removing the van from the pothole.

Issues of Freedom and Power Essay Example | Topics and Well Written Essays - 1250 words

Issues of Freedom and Power - Essay Example Economic freedom- Knights of labor Knights of labor, a major labor union during the 1860 hold a significant role in the evolution of economic rights in the United States. The formation of Knights of labor was the first efforts in the national labor organization because it was among the first labor unions to rally its members behind a goal. Nonetheless, the Knights of labor were a secret union characterized with less political pressure on its members. Uriah Stevens was the founder of the Knights of Labor, with many of his followers being Irish immigrant who were mainly Catholics. As a labor union, the Knights of labors enrolled members in various states to champion for improved rights of workers. Formed at a time when the United States repressed freedom of expression, the Knights of Labor worked in secrecy often recruiting its members using oaths and rituals. The main thrust of Knights of labor was to advocate for better economic reforms in their industries. At a time, when most of the immigrant received little pay and poor working conditions, the Knight of Labor became the ultimate vehicle to push for meaningful economic reforms. While the Knights of Labor avoided using industrial action, some of its members in states like Chicago were ready to strike. In 1886, about 80,000 people marched through Chicago supporting an eight-hour work shift. The long working hours were one of the main reasons that prompted the demonstration by members of Knight of Labor. This ignited confrontations between the Knights of Labor and the police who wanted to maintain law and order. In a social perspective, the Knight of Labor represented a growing awareness of rights among the workers. For instance, the call for an eight-hour work shift displayed a growing interest in social welfare among the workers.ii Most important, the meeting and demonstration among the workers guild indicated that rising level of social empowerment among the workers. Largely, the Knight of Labor has achieved many social gains because of its transformation from a secret labor to expressing its interest in various cities. Knight of Labor also championed for an end to child labor, a phenomenon that had characterized the American Labor environment. The political manifestation of 1960 would be incomplete without mention Knight of labor. Within the Knight Labor, there were some groups with interest to take control of the union. After leading a series of strikes, the government sentenced Albert Parson to death. This event made Lucy Parson seek ways of saving men that the government had convicted for deaths during strike. After visiting Europe in 1888, Lucy returned back American expressing new optimism in labor movements as she addressed workers and pressurized the state to create more projects in order to employ people. Political freedom (Progressivism- muckrakers and reform) The political freedom in the United States is a product of struggles that defined and helped create meaningful political reforms. With growing interest for political reforms, a group of Journalist joined hands to highlight on the wrongs of government through the literary works, which they published in magazines such as The Saturday Evening post McClure’